Low Power Vlsi Design Interview Questions

Founder of Semi Design, passionate engineer, VLSI geek, all-around Awesome! 1) 5+ Relevant Exp. VLSI(Very Large Scale Integration) is a Hi-tech field and is an upcoming field and would lead us to Nano technology. The Unified Power Format (UPF) is a published IEEE standard and developed by members of Accellera. Design Gray counter to count 6. In semiconductor design, standard cell methodology is a method of designing Application Specific Integrated Circuits (ASICs) with mostly digital-logic features. VLSI - Physical Design Training (All are subjective type questions) OCV analysis, Static timing analysis and advanced Physical design concepts like Low power. Selection based on written test and personal Interviews for eligible interested Candidates. We also know that level sensitive latch equation is. I applied though the career section of the company and got the call for the Memory Design requirement. * -It may be low power target-because you had more dynamic and leakage power * -It may be macro placement-because it had more connection with standard cells or macros * -It may be CTS-because you needed to handle multiple clocks and clock domain crossings. Design of a low power flip-flop using cmos deep submicron technology. It utilizes a wide-reaching signal that passes freely through solid objects, called "ultra narrowband" and requires. And in the digital. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. Preparing for a VLSI interview: Here are my tips on students appearing for interviews for VLSI design jobs. When the enable is High, new data is fed to the flip-flop and the register changes its state Ques : A very good interview question. And in the. Very-large-scale integration (VLSI) is the process of creating an integrated circuit by combining millions of transistors into a single chip for specific set of functions. In power planning stage rings are placed a) In middle of core. Tech regulation 2009 and 2013 for Anna university Chennai, Coimbatore, Tiruchirappalli, Tirunelveli and Madurai and all affiliated colleges in Tamil Nadu. VLSI Frequently Asked Interview Questions & Answers(part 4) What are the various design changes you do to meet design power targets? Areas which requires high performance, goes with high VDD and areas which needs low-performance are working with low Vdd's, by creating Voltage-islands and making sure that appropriate level-shifters. There were two telephonic technical rounds consisting of quality technical discussion. What is crosstalk? Crosstalk is a form of interference caused by signals in nearby conductors. Draw a state diagram for this Spec?. If VTC of a inverter has gain of 700 in forbidden region and another inverter has a gain of 10,000 which inverter would. • Gray-code counter is more power efficient. Physical Design Interview Question Part 1; Physical Design Interview Question Part 2; Physical Design Interview Question Part 3; Physical Design (Floorplanning) interview Question Physical Design (Power planning) Interview Questio Frequently Asked Question in Physical Design Inter Frequently Asked Question Part 2; Questions Related to. We also try to cover the practical questionnaires related to these topics which are asked in the interviews of product/service based semiconductor companies. One voltage domain V1 has 1. In low power VLSI design clock gating technique will reduce power all time or it depends upon the input date? Is any chance, the computation power may increase?. Within a certain input range, the amplification curve of a linear IC is a straight line i. Generally Buffer type or Latch type Level Shifters are available. Working VLSI/Software professionals will get direct admissions. the interview process consists of written test, face to face technical interview followed by hr round. VLSI GURU ©2015. Connect VDD and VSS to the standard cell VDD and VSS. VLSI Courses For Beginners Detailed Power Planning Concept; Low Power Design Techniques. low power, low power techniques Low Power VLSI Design and Implementation: Tutorials (Physical Design) Interview Questions and Answers; Process-Voltage. Standard cell methodology is an example of design abstraction, whereby a low-level VLSI-layout is encapsulated into an abstract logic representation (such as a NAND gate). A list of top frequently asked Digital Electronics Interview Questions and answers are given below. We were last 5 students remaining. Before the introduction of VLSI technology, most ICs had a limited set of functions they could perform. Design community is scrathing their head over asynchronous design possibilities. The logic is very simple: In asynchronous reset, the always block will invoked at positive edge of the reset signal, irrespective of clock's value. Answer) Given a power switching fabric and an isolation strategy, it is possible to power gate a block of logic, but unless a retention strategy is employed, all state information is lost when the block is powered down. Draw a state diagram for this Spec?. Each logic gate performs a function based on Boolean values with the help of signals from logic gates. ; Another LPWAN technology. Sources of Power Dissipation 1. Also find VLSI online practice tests to fight written tests and certification exams on VLSI. Let us consider there is a 2:1 mux which is getting inputs from the 2 separate adders and it will give the output based on only one adder. VLSI technical job interview questions of various companies and by job positions. Electronics Interview Questions-Interview Questions and Answers-25073 20/08/15 4:22 pm Their main advantages are low cost, low power, high performance, and very small size. INTERVIEW QUESTION: Static Timing analysis eBook: Puneet Mittal: Kindle Interview Vlsi - Free download as PDF File Timing problem (All questions use. This is used to create the voltage group that allow the appropriate level-shifter to shift and placed in cross-voltage domains. Follow: NPTEL COURSE BY PROF. Please walkin/mail/call us to schedule for written test & personal interview. Dynamic : A. Answers to some questions are given as link. 297+ VLSI interview questions and answers for freshers and experienced. pdf 2014 - vlsiinterviewquestions. VLSI Questions and Answers Manish Bhojasia , a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. VLSI Basics, Static Timing Analysis , Parasitic Extraction , Physical Design, DFM, Interview Questions, Resume Sample and Other VLSI Information. 250+ Vlsi Design Interview Questions and Answers, Question1: What are four generations of Integration Circuits? Question2: Give the advantages of IC? Question3: Give the variety of Integrated Circuits? Question4: Give the basic process for IC fabrication? Question5: What are the various Silicon wafer Preparation?. basically three ways to design VLSI circuits; either gate array, standard cell or full custom layouts can be used. questions and answers pdf free advanced digital objective questions and answers interview questions and answers in vlsi sql. Draw a state diagram for this Spec?. by Mohammed. ASIC interview questions. The VLSI-RN course is an exclusively designed course by industry experts to train you on the advanced Design and Verification technologies and methodologies i. Now I have got opportunity to work at an FPGA and VLSI design company as intern. Hi, Most of the vlsi interview questions posted here is the interview questions asked to the candidate s in the interview and it is easy for the answer. But in such a case, the combinational logic gate count grows, so the overall gate count savings may not be that significant. Behavioral designs are coded in Register Transfer Level languages like Verilog, VHDL etc. learn new things 3. Such vivid info on the VLSI and hardware engineering interview questions Flabbergasted! Thank you for making the read a smooth sail! Can anyone help me figure out the logic in this pseudo C code? This is part of a calculation for a message check value. Selection based on written test and personal Interviews for eligible interested Candidates. K Prasad, Kattula Shyamala and Kogent Learning Solutions Inc. VLSI Physical Design 4,495 views. Semiconductor market trend is very fast changing , and it is a challenge to face and ready with new technology. i requested to everyone who are working in the VLSI Front End Design, plz share their interview questions they faced and they asked it will really helpful to me and all other who are working in this field. Introduction to VLSI - Discussed on this page. CMOS interview and job questions part 2; VLSI - STA advance terms. And here the concept of Low Power Design comes into existence. The difference between latches and Flip-flop is that the latches are level triggered and flip-flops are edge triggered. [email protected] 1) Explain about setup time and hold time, what will happen if there is setup time and hold tine violation, how to overcome this? Set up time is the amount of time before the clock edge that the input signal needs to be stable to guarantee it is accepted properly on the clock edge. Digital design Synthesis for VLSI applications: Its a EDA technique to map high level behavioral designs into gates. Switch level: This is the lowest level of abstraction. Floorplan Interview questions 2019-01-24 by Admin Leave a Comment FLOORPLAN INTERVIEW QUESTIONS In today’s world, there is an ever-increasing demand for SOC speed, performance, and features. low power design techniques in vlsi. this is the first part of CMOS questions with answers followed by 10 more post on CMOS and digital design interview questions. VLSI Interview questions and answers connected to '1' when asynchronous reset is active Low and use the output of second Flop as the reset for rest of the design. VLSI Basics, Physical Design Interview Questions. VLSI interview questions and answers By Praveen Chitluri. How to decide floorplan size and shape, pin placement? What are the important checks after placement?. Search Related to 10EC664 Low Power VLSI Design VTU BE syllabus 6th semester for 2010 Scheme VTU Question Papers 6th semester VTU Question Paper for sixth Question. VLSI Interview Questions----- For Any answers you may contact Aviral Mittal at avimit att yhaoo dat cam. in a week, then we can change the whole world with in few months. Anna university previous year question papers for M. Tagged digital interview questions interview questions standard cell design interview questions vlsi vlsi interview. VLSI technical job interview questions of various companies and by job positions. questions and answers pdf free advanced digital objective questions and answers interview questions and answers in vlsi sql. The flip-flop is clocked at every clock cycle and the data path is controlled by an enable. Three levels of Power Distribution. Types of circuits required to implement low power design-level shifters/isolations cells etc. Lower nodes like 10nm ADI cypress Hot Topic Information Intel interview mentor. Important objective questions for vlsi core companies Sunday, April 22, 2018 core Which is the high level representation of VLSI design a) problem statement b) logic design c) HDL program Speed power product is measured as the product of a) gate switching delay and gate power dissipation. the candidate gave answer: Low power design. Let us consider there is a 2:1 mux which is getting inputs from the 2 separate adders and it will give the output based on only one adder. Inputs/outputs of the ASIC design flow. Low Power Design; Physical Design Course for Beginners; Interview Questions; Careers in VLSI; Sunday, 28 February 2016. To ensure that design is compliant with respect to low power. VLSI Basics, Physical Design Interview Questions. Table 1:low power design techniques. Electronics Interview Questions-Interview Questions and Answers-25073 20/08/15 4:22 pm Their main advantages are low cost, low power, high performance, and very small size. These advanced VLSI courses train the electronics engineers extensively on both the design and verification methodologies like RTL design and UVM methodologies and make them specialized in the advanced VLSI technology domains like Design For Test, Low Power Verification, Analog Mixed Signal Verification, etc. 2011-03-06 ebooks vlsi bank Can find books download and components,debaprasad 12:54. Digital Design:- * Conversion of one number system into another. If you are not getting answer to specific question, ask in this forum. Contact: [email protected] Important VLSI Interview Questions For Freshers 1) Explain how logical gates are controlled by Boolean logic? In Boolean algebra, the true state is denoted by the number one, referred as logic one or logic high. In Design & Verification 2) Content Writer 3) Motivation Speaker 4) Certified Counselor In VLSI Domain 5) Giving the VSLI Unlimited Counseling at Just 1 Rupee! 6) Done Several Projects in Low Power VLSI Design IEEE. low power, low power techniques, low power design. Design architecture. Ever thought what's an interviewer's favorite questions to rip you off - all of my previous post :). A review on power optimization of linear feedback shift register for low power built in self test; An ultra low power BPSK receiver and demodulator based on injection locked oscillator. We are welcomes to post various articles which enables us to understand current trends in micro-electronics to nano-electronics eraWe will also share various specification documents of standard interfaces. I am not going to bore you by putting obvious HR type tips here. Get Personalised Job Recommendations. com I plan to update this document every week and share it with the world. First HR interview and then Technical Phone Interview. It occurs in CMOS when input of gate switches. To meet the design power target there should be a process to design with Multi-VDD designs, this area requires high performance, and also the high VDD that requires low-performance. The motive of this group is to create awareness with in the student for VLSI/Semiconductor industry. com View my complete profile. In semiconductor design, standard cell methodology is a method of designing Application Specific Integrated Circuits (ASICs) with mostly digital-logic features. So for a 3-bit counter it is 8-6=2. 297+ VLSI interview questions and answers for freshers and experienced. Role of synthesis in digital chip design. GATE Preparation, nptel video lecture dvd, electronics-and-communication-engineering, vlsi-design, cmos-process-parameters, NMOS transistors, PMOS transistors, MOS. because the clock nets will consume 30 to 40% of power in the design. If the FIFO is empty, the b-output data is not valid. If inverted output of D flip-flop is connected to its input how the flip-flop behaves? Ø RAM is used for low power and low area. the candidate gave answer: Low power design; Can you talk about low power techniques? How low power and latest 90nm/65nm technologies are related? Refer here and browse for different low power techniques. VLSI technical job interview questions of various companies and by job positions. Designer must how data flows between various registers of the design. thnaks to everyone in advance amit gangwar. Design a FIFO 1 byte wide and 13 words deep. View Test Prep - vlsi interview questions 2 from CSE Seminar at IIT Bombay. as an expert of vlsi , I will tell that go through vlsi book, any book is fine, solve as many questions it will enhance your skill and bring more confidence on vlsi interview. Vlsi best notes google docs 1. collection of VLSI/ASIC digital logic design interview questions, partially documented at really taken interviews, partially designed based on the commonly asked questions and usually touched issues. ASIC physical design basic interview question answers. Low Power Design Techniques In today's IOT (Internet Of Things) world there are various wearable/Portable smart devices coming up in the market which are battery operated. 2) what all low power techniques, you have used? How low power and latest Physical Design (VLSI) Interview Questions. In this section we have covered almost all VLSI questions that might be asked during an interview. Types of circuits required to implement low power design-level shifters/isolations cells etc. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. AJIT PAL from IIT Kharagpur. To meet the design power target there should be a process to design with Multi-VDD designs, this area requires high performance, and also the high VDD that requires low-performance. Design a 2 input AND gate using a 2 input XOR gate. This is used to create the voltage group that allow the appropriate level-shifter to shift and placed in cross-voltage domains. A synchronized clock is provided to this system as well. Content : Syllabus, Question Banks, Books, Lecture Notes, Important Part A 2 Marks Questions and Important Part B 16 Mark Questions, Previous Years Question Papers Collections. VLSI Interview Questions with Answers - Kindle edition by Sony, Sam. In which field are you interested? * Answer to this question depends on your interest, expertise and to the requirement for which you have been interviewed. Answer to this question depends on your interest, expertise and to the requirement for which you have been interviewed. We also try to cover the practical questionnaires related to these topics which are asked in the interviews of product/service based semiconductor companies. Need for Low Power Circuit Design 1. because the clock nets will consume 30 to 40% of power in the design. In technical interview, asked questions based on our resume llike design concepts, verilog rtl. VLSI - Physical Design Training (All are subjective type questions) OCV analysis, Static timing analysis and advanced Physical design concepts like Low power. Interview questions physical_design 1:56 AM all topic related interview questions , Interview questions 0 Comments sort of question those I faced in my interviews some are from service based company and some are from product based also. vlsi interview questions FPGA : A Field-Programmable Gate Array (FPGA) is a semiconductor device containing programmable logic components called "logic blocks", and programmable interconnects. To meet the design power target there should be a process to design with Multi-VDD designs, this area requires high performance, and also the high VDD that requires low-performance. Xz VLSI I share my notes for learning Backend VLSI. CMOS interview question - Part 1 (MOSFET) Here is the list of CMOS interview questions that are most frequently asked during job interview and written exams. EC6601 VLSI Design (VLSI) Syllabus UNIT I MOS TRANSISTOR PRINCIPLE NMOS and PMOS transistors, Process parameters for MOS and CMOS, Electrical properties of CMOS circuits and device modeling, Scaling principles and. Good fundamentals helps with quick design understanding. Within a certain input range, the amplification curve of a linear IC is a straight line i. Wednesday, January 20, 2010. VLSI technical job interview questions of various companies and by job positions. Unused states=2. So for a 3-bit counter it is 8-6=2. The VLSI-RN course is an exclusively designed course by industry experts to train you on the advanced Design and Verification technologies and methodologies i. In power planning stage rings are placed a) In middle of core. Most of the questions relate to simplified design principles, techniques and tricks, the real-. 8b9facfde6. Choose the Drive-strenght of the pads based on the current requirements , timing. Digital Design:- * Conversion of one number system into another. It occurs in CMOS when input of gate switches. With increasing complexities in power architecture and complex power domain partitioning, it is becoming imperative to drive functional and physical verification of these complex power logic hand in hand. UNIT-1 Fundamentals of Low Power VLSI Design Need for Low Power Circuit Design: The increasing prominence of portable systems and the need to limit power consumption (and hence, heat dissipation) in very-high density ULSI chips have led to rapid and innovative developments in low-power design during the recent years. Why is isolation cell required in power aware design? How many types of isolation cells. First of all, this is the most important VLSI interview question. What are the disadvantages of using asynchronous reset ? Below are the important VLSI CMOS interview. Digital design Interview Questions If inverted output of D flip-flop is connected to its input how the flip-flop behaves? Design a circuit to divide input frequency by 2. the candidate gave answer: Low power design; Can you talk about low power techniques? How low power and latest 90nm/65nm technologies are related? Refer here and browse for different low power techniques. A blog on VLSI Design, verification, Verilog, VHDL, SystemVerilog, ASIC, FPGA, CPLD, Digital Design, Timing Analysis, Interview Questions. Physical Design MCQ questions by kamalnadh. I thank my frens for their help. Low Power Design Technique : Tutorials; APTITUDE QUESTIONS; VLSI Industry Updates; Implementation of Logical Questions; CDC - Real time implementation; Verilog Code for modules; Protocol; VLSI Interview Questions; Verilog Binary to gray code conversion September (2) July (2) June (12) May (3) 2015 (8). 16)driving point in your design, data or clock. Isolation cell with clamp_value 1: In isolation mode, this cell drives 1 to its downstream logic. Onsite interview: 1-1 interviews each 1 hour long from 9:30am -5:00pm Initially, questions on the resume. No comments: Post a Comment. Generally, Analog circuits such as DC-DC converters, power management circuits, Analog to Digital Converters require a stable voltage reference circuit with a tight specification for voltage variation in. Home: 000-000-0000 | Cell: 000-000-0000. Also find VLSI online practice tests to fight written tests and certification exams on VLSI. I work as a Physical Design Engineer. Role of synthesis in digital chip design. But in such a case, the combinational logic gate count grows, so the overall gate count savings may not be that significant. Generally, Analog circuits such as DC-DC converters, power management circuits, Analog to Digital Converters require a stable voltage reference circuit with a tight specification for voltage variation in. in a week, then we can change the whole world with in few months. Posted on April 5, 2020 April 18, 2020 0. do you do anything special during synthesis stage; what is tie-high and tie-low cells and where it is used; what is the difference between latches and flip-flops based designs; what are the various design changes you do to meet design power targets; what is meant by library characterization;. A synchronized clock is provided to this system as well. Low Power VLSI Design One of the main topic for Intel and Qualcomm interviews. Strong engineering professional with a Master's degree focused in Very Large Scale Integration (VLSI) from Indian Institute of Technology, Mandi. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. These devices also need to be Power efficient such that it can run on battery for a long time. Unused states=2. Table 1:low power design techniques. VLSI(Very Large Scale Integration) is a Hi-tech field and is an upcoming field and would lead us to Nano technology. Mindmajix offers Advanced Hardware Design Development Interview Questions 2019 that helps you in cracking your interview & acquire dream career as Hardware Design Developer. I applied through a recruiter. the input and output voltages. reverse biased drain substrate and drain substrate junction band-band tunnelling 15. Power planning is a step which typically is done with floorplanning in which power grid network is created to distribute power to each part of the design equally. VLSI Implementation of Booths Algorithm using FPGA with Verilog/VHDL Design of a Multi-Mode Receive Digital-Front-End for Cellular Terminal RFIC VLSI implementation of canonical Huffman encoder/decoder algorithm using FPGA with Verilog/VHDL code. in a week, then we can change the whole world with in few months. It's an excellent course that in detail covers the low power, synthesis and sta concepts. We also try to cover the practical questionnaires related to these topics which are asked in the interviews of product/service based semiconductor companies. These cells are part of standard-cell library. Algorithmic Level Techniques for Low Power Design - Duration: 30:53. Floorplan Interview questions 2019-01-24 by Admin Leave a Comment FLOORPLAN INTERVIEW QUESTIONS In today’s world, there is an ever-increasing demand for SOC speed, performance, and features. We are welcomes to post various articles which enables us to understand current trends in micro-electronics to nano-electronics eraWe will also share various specification documents of standard interfaces. ; Another LPWAN technology. AMD India Engineering Centre Pvt. Why transmission gate (TG) is called non-restoring circuit? Answer: Transmission gate is a non-restoring circuit because if the input to transmission gate is a noisy or otherwise degraded signal, the output will receive the same noise. Lower nodes like 10nm ADI cypress Hot Topic Information Intel interview mentor. Types of circuits required to implement low power design-level shifters/isolations cells etc. To ensure that design is compliant with respect to low power. The VLSI-RN course is an exclusively designed course by industry experts to train you on the advanced Design and Verification technologies and methodologies i. vlsi, verilog, synthesis, STA, physical design questions and detail physical design questions and detail. before going for these types of interview questions , study any good vlsi book 2. Switching Power Dissipation : Due to charging and discharging of capacitors B. d) None 79. These Questions are asked by Companies like Motorola,TI,Intel,Nvidia,Atrenta,ST,Agilent, Sasken,AMD, DIGITAL DESIGN 1. AJIT PAL from IIT Kharagpur. Not-So Critical IP & Least Critical IP would work at f/2 MHz. As discussed in Clock switching and clock gating checks, there are two kinds of clock gating checks at combinational gates. Designer should know the gate-level diagram of the design. Backend (Physical Design) Interview Questions and Answers * Below are the sequence of questions asked for a physical design engineer. So to avoid that we isolate the outputs of the power down domain. And in the digital. After having done the de-facto preparation of VLSI interview questions, you can focus more on the specific niche or the focus area that you are interviewing for, which could be verification, analog design or something else. If ( Clock ). There are different low power design techniques to reduce the above power components Dynamic power component can be reduced by the following techniques 1. It utilizes a wide-reaching signal that passes freely through solid objects, called "ultra narrowband" and requires. We also try to cover the practical questionnaires related to these topics which are asked in the interviews of product/service based semiconductor companies. 2(power n)-2n is the one used to find the unused states in johnson counter. learn new things 3. On the rising edge of clk the FIFO stores data and increments wptr. during this scenario spikes will be generated momentarily in the current as shown in fig below. Unused states=2. Q] Explain Low power edt controller- Low power controller is extra circuitry which tool will add along with the other EDT logic in the design- Depending upon the powe metrics tool will generate the patterns- Tool will skip the patterns which are outside the power metrics- It is necessary to handle the power during the test. 17)How Clock uncertainty was introduced 18)How vt of cell is determined 19)Which vt cell to use for hold fixing 20)ndr 21)via b/w m5 n m1. Tech regulation 2009 and 2013 for Anna university Chennai, Coimbatore, Tiruchirappalli, Tirunelveli and Madurai and all affiliated colleges in Tamil Nadu. But there are some circuits which are made using other logics like pass transistor logic, dynamic CMOS logic etc. Find papers for M. Xz VLSI I share my notes for learning Backend VLSI. Clock gating is a very common technique to save power by stopping the clock to a module when the module is not operating. Dynamic power consumption can be reduced by a) Load capacitance. Netlist is a description of the circuit in terms of gates and connections between them. L&T Infotech Park, Mount Poonamalle Road, Manapakkam, CHENNAI -– 600 089. If VTC of a inverter has gain of 700 in forbidden region and another inverter has a gain of 10,000 which inverter would. txt) or read online for free. Experienced Design Engineer with a demonstrated history of working in the semiconductors industry. written test is based on the aptitude, c , micro processor(8085,8086), and verilog languages. Designer requires the knowledge of switch-level implementation details. c) Equal to. i requested to everyone who are working in the VLSI Front End Design, plz share their interview questions they faced and they asked it will really helpful to me and all other who are working in this field. GATE Preparation, nptel video lecture dvd, electronics-and-communication-engineering, vlsi-design, cmos-process-parameters, NMOS transistors, PMOS transistors, MOS. Explain why & how a MOSFET works Such vivid info on the VLSI and hardware engineering interview questions Flabbergasted! Thank you for making the read a smooth sail! Header Check Value is a 2 byte high/low binary number computed using the following algorithm (in pseudo C programming. Metal 4 and 5. To ensure that design is compliant with respect to low power. Guru vlsi interview question 2vlsi interview question 1 vlsi interview 3 vlsi interview 4 vlsi interview 5 vlsi interview 7. If you are currently a Synopsys customer, you may download an electronic (PDF) copy of the Low Power Methodology Manual (LPMM) at no cost. I work as a Physical Design Engineer. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. This is used to create the voltage group that allow the appropriate level-shifter to shift and placed in cross-voltage domains. Overview of challenges in low power VLSI circuit design. What is metastability? Asynchronous design style is also one of the latest design options to achieve low power. Content : Syllabus, Question Banks, Books, Lecture Notes, Important Part A 2 Marks Questions and Important Part B 16 Mark Questions, Previous Years Question Papers Collections. remove noise and share the most important, relevant and concise information If you have any questions feel free to reach me @ [email protected] In Lower technology nodes, if the gate is connected to power/ground the transistor might be turned on/off due to power or ground bounce. The design is implemented using switches/transistors. The Digital Electronics Blog: Interview Questions - VLSI, is from the popular technology blog that covers Electronics, Semiconductors, Personal Technology, Innovations and Inspiration!. Oct 3, Explain Custom Design Flow? A = 1. What are the sources of power dissipation? + Dynamic power consumption, due to logic transitions causing logic gates to charge/discharge load capacitance. Unused states=2. There were two telephonic technical rounds consisting of quality technical discussion. What is FPGA? The on-board high-speed USB2 port provides board power, FPGA programming, and user-data transfers at rates up to 38Mbytes/sec. On the rising edge of clkb the data is put on the b-output,the rptr points to the next data to be read. Ans: To meet the design power target there should be a process to design with Multi-VDD designs, this area requires high performance, and also the high VDD that requires low-performance. However, despite relentless efforts of verification engineers, some issues may still skip through and make their way to silicon. VLSI INTERVIEW QUESTIONS (PHYSICAL DESIGN) SOLA a. Guide for FPGA and ASIC Implementations; Computers; VLSI Design; This book provides insight into the practical design of VLSI circuits. I am preparing this document to help others in the semiconductor industry to achieve: 1. This is used to create the voltage group that allow the appropriate level-shifter to shift and placed in cross-voltage domains. Design Synthesis: In this step RTL code is converted to gate level netlist using synthesis tool. The leakage power of a CMOS logic gate does not depend on input transition or load capacitance and hence it remains constant for a logic cell. Not-So Critical IP would work at f/2 MHz. A synchronized clock is provided to this system as well. These are specific to a VLSI job interview, and will surely help. The Electronics department of NIT Durgapur organized a seminar on low power DSP on 8/2/09it was delivered by an ex student of the college itselfhe has a research background ( 2 yrs work experience in DRDO n phd from Univ of Pennsylvania)various issues, from DFT designing to application of DSP in d field of medical sciences were discussedthe language was plain n simple and even a. What is synthesis? What is clock jitter ? What are the timing optimization techniques used in Synthesis? Macro placement guidelines. The marketing department has been out surfing the web and has noticed that companies are advertising the MIPs/mmG , MIPs/Watt, and Watts/cm_ of their products. * -It may be low power target-because you had more dynamic and leakage power * -It may be macro placement-because it had more connection with standard cells or macros * -It may be CTS-because you needed to handle multiple clocks and clock domain crossings. com Interview Questions www. VLSI design flow is not exactly a push button process. productivity 2. 3346 Heather Sees Way. Onsite interview: 1-1 interviews each 1 hour long from 9:30am -5:00pm Initially, questions on the resume. So, low power VLSI circuit design is a must for portable devices. Top 17 VLSI Interview Questions & Answers 1) Explain how logical gates are controlled by Boolean logic? In Boolean algebra, the true state is denoted by the number one, referred as logic one or logic high. In order to create an ideal solution for this problem, Low Power Design has to be considered as a crucial factor. In which field are you interested? * Answer to this question depends on your interest, expertise and to the requirement for which you have been interviewed. September 25, 2013 Interview Questions Digital Logic. Signal has to cross from one domain to another domain while in functional mode. One of the most common questions is regarding the difference between DCS and PLC as well as between PLC and SCADA – and if there is any difference at all. It operates over a continuous range of input levels. VLSI Interview Questions Low Power, Low Area Design a state machine which divides the input frequency of a clock by 3. While, the false state is represented by the number zero, called logic zero or logic low. verilog interview questions; synthesize hardware. Weste and Harris, “CMOS VLSI Design”. According to research Hardware Design Development has a market share of about 5. With 100% modulation,ratio of side band power to total power transmitted in an amplitude modulated wave is A) 2/3 B) 1/3 C) 1/2 D) 1/4 Note: Post your answers with Option name and reason of your answer so that ot. Selection based on written test and personal Interviews for eligible interested Candidates. fpga interview questions,fpga interview questions vlsi4freshers,fpga design interview questions,fpga interview questions and answers,fpga engineer interview questions,intel fpga interview questions,synopsys fpga interview questions,fpga profile interview questions,fpga prototyping interview questions,vlsi fpga interview questions,vlsi interview questions,fpga interview questions for freshers. So, low power VLSI circuit design is a must for portable devices. verilog interview questions; synthesize hardware. Very large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining millions of MOS transistors onto a single chip. There are different low power design techniques to reduce the above power components Dynamic power component can be reduced by the following techniques 1. Designer should know the gate-level diagram of the design. Contact: [email protected] Working VLSI/Software professionals will get direct admissions. Their main advantages are low cost, low power, high performance, and very small size. So the role I am assigned is RTL design engineer. These 20 solved VLSI questions will help you prepare for technical interviews and online selection tests conducted during campus placement for freshers and job interviews for professionals. Before the introduction of VLSI technology, most ICs had a limited set of. Connect VDD and VSS to the standard cell VDD and VSS. 4/29/13 Digital design interview questions & answers VLSI & ASIC Digital design interview. If you are currently a Synopsys customer, you may download an electronic (PDF) copy of the Low Power Methodology Manual (LPMM) at no cost. UPF is designed to reflect the power intent of. physical Design interview questions. Guide for FPGA and ASIC Implementations; Computers; VLSI Design; This book provides insight into the practical design of VLSI circuits. com I plan to update this document every week and share it with the world. What are the important aspects of VLSI optimization? Power, Area, and Speed. Tagged digital interview questions interview questions standard cell design interview questions vlsi vlsi interview. by Mohammed. Level Shifter. One voltage domain V1 has 1. Phone : 044-22537900 FAX : 044-2xxxxxxx. Design changes, wrong understanding of the design can lead to incorrect false paths or multicycle paths in the constraints. learn new things 3. In Lower technology nodes, if the gate is connected to power/ground the transistor might be turned on/off due to power or ground bounce. 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Types of circuits required to implement low power design-level shifters/isolations cells etc. Working VLSI/Software professionals will get direct admissions. (All are subjective type questions) Course content: Fundamental concepts in Digital abstraction, Static discipline, MOSFET switch, CMOS basics, Digital circuit speed, NMOS logic, CMOS logic, Combinational logic. 1/ What is latch up? Latch-up pertains to a failure mechanism wherein a parasitic thyristor (such as a parasitic silicon controlled rectifier, or SCR) is inadvertently created within a circuit, causing a high amount of current to continuously flow through it once it is accidentally triggered or turned on. So, low power VLSI circuit design is a must for portable devices. the input and output voltages. • Variable V dd and Vt is a trend • CAD tools high level power estimation and management • Don't just work on VLSI, pay attention to MEMS. Low power. Most of the logic in digital VLSI circuits is made using CMOS logic because of its low power consumption, high fanout. Design Synthesis: In this step RTL code is converted to gate level netlist using synthesis tool. FPGA Interview Questions Q. A good collection of VLSI/ASIC logic design interview questions, partially documented at really taken interviews in semiconductor companies, partially designed based on the commonly asked questions and usually touched issues. reverse biased drain substrate and drain substrate junction band-band tunnelling 15. Strong engineering professional with a Master's degree focused in Very Large Scale Integration (VLSI) from Indian Institute of Technology, Mandi. The microprocessor is a VLSI device. VLSI and hardware engineering interview questions 1. Digital design Interview Questions If inverted output of D flip-flop is connected to its input how the flip-flop behaves? Design a circuit to divide input frequency by 2. Even if for non portable devices it is important, as high power consumption leads to high heat dissipation which in turn can burn out the circuit and can be a cause for fire hazard. as an expert of vlsi , I will tell that go through vlsi book, any book is fine, solve as many questions it will enhance your skill and bring more confidence on vlsi interview. WRITTEN TEST - 20 QUESTIONS (8 Digital, 6 Verilog and 6 Aptitude) - 45 MIN. The Unified Power Format (UPF) is a published IEEE standard and developed by members of Accellera. The logic is very simple: In asynchronous reset, the always block will invoked at positive edge of the reset signal, irrespective of clock's value. • Gray-code counter is more power efficient. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. Fundamentals of Low - Power VLSI Design ⨘ } VLSI } 14 } Latch-up & CMOS Technologies } This lecture discusses latch-up phenomenon in SMOS circuits. Design Gray counter to count 6. Not-So Critical IP & Least Critical IP would work at f/2 MHz. The FIFO is interfacing 2 blocks with different clocks. Givethedifferent bitwiseoperators. Selection based on written test and personal Interviews for eligible interested Candidates. VLSI Synthesis for Digital Design. Introduction to VLSI - Discussed on this page. What do you mean by D register?. QUESTION:. If the FIFO is empty, the b-output data is not valid. Onsite interview: 1-1 interviews each 1 hour long from 9:30am -5:00pm Initially, questions on the resume. The gate count is low 2. IR Drop reduction on chip using Redhawk 3. Content : Syllabus, Question Banks, Books, Lecture Notes, Important Part A 2 Marks Questions and Important Part B 16 Mark Questions, Previous Years Question Papers Collections. MOSFET is the Metal Oxide semiconductor field effect transistor which is used for the amplification and switching of the electronic signals. Answer to this question depends on your interest, expertise and to the requirement for which you have been interviewed. Behavioral designs are coded in Register Transfer Level languages like Verilog, VHDL etc. VLSI and Circuit Design. If you are currently a Synopsys customer, you may download an electronic (PDF) copy of the Low Power Methodology Manual (LPMM) at no cost. Question 2: Questions were from VLSI design flow, Timing analysis (Setup and hold violation) Write Answer; Question 3: Questions were from basic combinational circuits , physical design questions ( based on speed improvement, low power consumption, area), Stick diagrams Write Answer. The questions are also related to Static Timing Analysis and Synthesis. In your design you have dual port memories each working at a different frequency. Design architecture. In Lower technology nodes, if the gate is connected to power/ground the transistor might be turned on/off due to power or ground bounce. ECE 410: VLSI Design Course Lecture Notes (Uyemura textbook) Professor Fathi Salem - very large scale integration - lots of transistors integrated on a single chip • Top Down Design - but the complementary set allows the "load" to be turned off for zero static power dissipation pMOS nMOS assert-low logic inputs output assert. VLSI Interview Questions. Physical Design interview Questions With Answers Part 1 Q. Layout Interview Questions BY Poornima Jenaras -Bangalore-VLSI Designers **THIS SERIES DONATED BY Poornima Jenaras in our ORKUT GROUP Bangalore-VLSI Designers ** 1) According to Clein, what has been one of the main reasons why CAD tools have failed to be successful among IC layout engineers?. VLSI interview questions and answers for freshers and experienced candidates. In order to create an ideal solution for this problem, Low Power Design has to be considered as a crucial factor. Research is conducted in VLSI circuits and computer-aided design, building blocks for new circuit technology, integrated circuit testing and fault diagnosis, digital signal processing, computer-aided synthesis, field programmable gate arrays (FPGAs), and design of low-power circuits. These cells are part of standard-cell library. Isolation cell with clamp_value 1: In isolation mode, this cell drives 1 to its downstream logic. Find papers for M. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Tagged digital interview questions interview questions standard cell design interview questions vlsi vlsi interview. For a state machine with 9- 16 states, a binary FSM only requires 4 flip-flops while a onehot FSM requires a flip-flop. Layout Interview Questions BY Poornima Jenaras -Bangalore-VLSI Designers **THIS SERIES DONATED BY Poornima Jenaras in our ORKUT GROUP Bangalore-VLSI Designers ** 1) According to Clein, what has been one of the main reasons why CAD tools have failed to be successful among IC layout engineers?. low power, low power techniques Low Power VLSI Design and Implementation: Tutorials (Physical Design) Interview Questions and Answers; Process-Voltage. Purpose of this cell is to shift the signal Voltage (Low to High or High to Low) from one voltage domain to another. Role of synthesis in digital chip design. 22)low power design 23)diff b/w latch n ff 24)if 2ns clk is given at high level of 10ns,what is the o/p. 12 in book "Physical Design Interview Questions" selling in Amazon. I was just expecting some question and answers in the book. The FIFO is interfacing 2 blocks with different clocks. ANALOG CIRCUITS INTERVIEW QUESTIONS AND ANSWERS. Q] Explain Low power edt controller- Low power controller is extra circuitry which tool will add along with the other EDT logic in the design- Depending upon the powe metrics tool will generate the patterns- Tool will skip the patterns which are outside the power metrics- It is necessary to handle the power during the test. The most recent officially published version is IEEE 1801-2013. why did i get married 3 movie download we'll vlsi design by debaprasad das pdf download you a link to download Astro Vision Lifesign With Remedies Full Download Free. We also know that level sensitive latch equation is. CMOS interview and job questions part 2; VLSI - STA advance terms. Please walkin/mail/call us to schedule for written test & personal interview. And in the digital. Physical Design interview Questions With Answers Part 1 Q. Answer) Given a power switching fabric and an isolation strategy, it is possible to power gate a block of logic, but unless a retention strategy is employed, all state information is lost when the block is powered down. ANALOG CIRCUITS INTERVIEW QUESTIONS AND ANSWERS. Physical Design MCQ questions by kamalnadh. measure your capability by your shelf, you can go to any chapter end questions and see how many questions you can solve. Guru vlsi interview question 2vlsi interview question 1 vlsi interview 3 vlsi interview 4 vlsi interview 5 vlsi interview 7. The quantity required is low 3. VLSI and Circuit Design. VLSI & Computer Architecture Interview Questions Useful Technical Links VLSI interview questions and answers :: ALL Interview. Ans: To meet the design power target there should be a process to design with Multi-VDD designs, this area requires high performance, and also the high VDD that requires low-performance. Design changes, wrong understanding of the design can lead to incorrect false paths or multicycle paths in the constraints. A onehot FSM design requires a flip-flop for each state in the design and only one flip- flop (the flip-flop representing the current or "hot" state) is set at a time in a one hot FSM design. Operand isolation technique is used in combinational circuits. Working VLSI/Software professionals will get direct admissions. If X = LOW for 4 clock ticks, B = 1. 8 (20 ratings) Course Ratings are calculated from individual students' ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. the candidate gave answer: Low power design; Can you talk about low power techniques? How low power and latest 90nm/65nm technologies are related? Refer here and browse for different low power techniques. Received information from HR directly. It's an excellent course that in detail covers the low power, synthesis and sta concepts. the candidate gave answer: Low power design; Can you talk about low power techniques? How low power and latest 90nm/65nm technologies are related? Refer here and browse for different low power techniques. Scan chain re ordering will reduce congestion a) True b) False 80. 8b9facfde6. com View my complete profile. Design a FIFO 1 byte wide and 13 words deep. * -It may be low power target-because you had more dynamic and leakage power * -It may be macro placement-because it had more connection with standard cells or macros * -It may be CTS-because you needed to handle multiple clocks and clock domain crossings. A battery life can be good when your circuit consumes low power. Design a 2 input OR gate using a 2:1 mux. These advanced VLSI courses train the electronics engineers extensively on both the design and verification methodologies like RTL design and UVM methodologies and make them specialized in the advanced VLSI technology domains like Design For Test, Low Power Verification, Analog Mixed Signal Verification, etc. the two unused states are 010 and 101 41)The question is to design minimal hardware system, which encrypts 8-bit parallel data. Source: Prof. So to avoid that we isolate the outputs of the power down domain. A synchronized clock is provided to this system as well. Now I have got opportunity to work at an FPGA and VLSI design company as intern. as an expert of vlsi , I will tell that go through vlsi book, any book is fine, solve as many questions it will enhance your skill and bring more confidence on vlsi interview. Here you will find over 200 Pages on various topics that may be essential to become a Digital Design and/or verification engineer. In Lower technology nodes, if the gate is connected to power/ground the transistor might be turned on/off due to power or ground bounce. The FIFO is interfacing 2 blocks with different clocks. A Level shifter is placed in the railvoltage domain of the cell. And here the concept of Low Power Design comes into existence. Newer Post Older Post Home. Answer to this question depends on your interest, expertise and to the requirement for which you have been interviewed. share information 4. the candidate gave answer: Low power design. T ie-high and Tie-Low cells are used to connect the gate of the transistor to either power or ground. So, low power VLSI design is must. Even interview questions are discussed and it really helps to crack any product interview. 16)driving point in your design, data or clock. Important VLSI Interview Questions For Freshers 1) Explain how logical gates are controlled by Boolean logic? In Boolean algebra, the true state is denoted by the number one, referred as logic one or logic high. CMOS interview and job questions part 2; VLSI - STA advance terms. Most of the questions relate to simplified design principles, techniques and tricks, the real-. VLSI Interview questions and answers connected to '1' when asynchronous reset is active Low and use the output of second Flop as the reset for rest of the design. Dft In Vlsi. to do wealth on gas and the language "coupon mark" and the power set, to quest Analog Interview Questions Digital Design Digital VLSI FPGA Design. I am not going to bore you by putting obvious HR type tips here. Can be used to study the activity factor for power estimation. Vlsi best notes google docs 1. When both pullup and pulldown networks are conducting for a small duration and there is a direct path b/w VDD to VSS. Answers to some questions are given as link. Q] Explain Low power edt controller- Low power controller is extra circuitry which tool will add along with the other EDT logic in the design- Depending upon the powe metrics tool will generate the patterns- Tool will skip the patterns which are outside the power metrics- It is necessary to handle the power during the test. So, low power VLSI design is must. Basic Electronics Interview Questions and Answers. 1) Threshold voltage depends on tracks in low metal layer a) Less than. Questions about the APR flow in the physical design and general VLSI concepts like logic designing and perl scripting. What is FPGA? The on-board high-speed USB2 port provides board power, FPGA programming, and user-data transfers at rates up to 38Mbytes/sec. The circuit design is not firm 4. These devices also need to be Power efficient such that it can run on battery for a long time. System On Chip Architecture. Let's look at the types of isolation cells available in low power design. 8 (20 ratings) Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. Oct 3, Explain Custom Design Flow? A = 1. Logic blocks can be programmed to perform the function of basic logic gates such as AND, and XOR, or more complex combinational functions such as. FPGA Interview Questions Q. A blog on VLSI Design, verification, Verilog, VHDL, SystemVerilog, ASIC, FPGA, CPLD, Digital Design, Timing Analysis, Interview Questions. VLSI - Physical Design Training (All are subjective type questions) OCV analysis, Static timing analysis and advanced Physical design concepts like Low power. the interview process consists of written test, face to face technical interview followed by hr round. can download as pdf s professional vlsi. September 25, 2013 Interview Questions Digital Logic. Dynamic power includes a short circuit power component. Algorithmic Level Techniques for Low Power Design - Duration: 30:53. We were last 5 students remaining. What are the sources of power dissipation? + Dynamic power consumption, due to logic transitions causing logic gates to charge/discharge load capacitance. Power off operator (square) Interview Questions & Answers 2016 (4). The motive of this group is to create awareness with in the student for VLSI/Semiconductor industry. If possible, I would like to create a link between experts and the students If every employee in Semiconductor Industry take the responsibility of 1 candidate (fresher or just entered into the industry) and spend couple of Hrs. questions and answers pdf free advanced digital objective questions and answers interview questions and answers in vlsi sql. 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A synchronized clock is provided to this system as well. So the role I am assigned is RTL design engineer. Sources of Power Dissipation 1. verilog interview questions; synthesize hardware. Wednesday, January 20, 2010. this is the first part of CMOS questions with answers followed by 10 more post on CMOS and digital design interview questions. the candidate gave answer: Low power design; Can you talk about low power techniques? How low power and latest 90nm/65nm technologies are related? Refer here and browse for different low power techniques. code counter is more power efficient. MCQ quiz on VLSI Design multiple choice questions and answers on VLSI Design MCQ questions on VLSI Design objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. In power planning stage rings are placed a) In middle of core. Important VLSI Interview Questions For Freshers 1) Explain how logical gates are controlled by Boolean logic? In Boolean algebra, the true state is denoted by the number one, referred as logic one or logic high. Low Power Design; Physical Design Course for Beginners; Interview Questions; Careers in VLSI; Sunday, 28 February 2016. They weren't always required, though they were nice to have. Most of the logic in digital VLSI circuits is made using CMOS logic because of its low power consumption, high fanout. Within a certain input range, the amplification curve of a linear IC is a straight line i. We also try to cover the practical questionnaires related to these topics which are asked in the interviews of product/service based semiconductor companies. com View my complete profile. Each logic gate performs a function based on Boolean values with the help of signals from logic gates. These cells are part of standard-cell library. Before the introduction of VLSI technology, most ICs had a limited set of functions they could perform. Answer) Given a power switching fabric and an isolation strategy, it is possible to power gate a block of logic, but unless a retention strategy is employed, all state information is lost when the block is powered down. RTL Design, ASIC & FPGA design methodologies, FPGA Architecture, Advanced Verilog for Verification, ASIC Verification Methodologies, SystemVerilog, UVM, Assertion Based Verification - SVA, Verification Planning and Management, Code. VLSI technical job interview questions of various companies and by job positions. Top 100 Splunk Interview Questions & Answers August 23, 2019 - 11:10 am Top 25 Internship Interview Questions & Answers August 16, 2019 - 6:24 am Top 25 System Design Interview Questions and Answers August 16, 2019 - 5:28 am. And passing the interview after 3months then I will be employed. Implementing VLSI projects opens up a challenging and bright career for students as well as researchers. Digital electronics are electronics that operate on digital signals where digital electronic circuits are made from a series of logic gates by assembling them. They have stipulated that there is no stipend for three months as intern. This is the best oral I given ever. Considering this, there seems a need to develop a solution that can make use of low voltage and low power design techniques. Skill : Physical Design, VLSI Design, ASIC Design, Architectures, Circuit Design, C/Perl. Answers to some questions are given as link. The motive of this group is to create awareness with in the student for VLSI/Semiconductor industry. com - VLSI Design Forum. Guide for FPGA and ASIC Implementations; Computers; VLSI Design; This book provides insight into the practical design of VLSI circuits. VLSI(Very Large Scale Integration) is a Hi-tech field and is an upcoming field and would lead us to Nano technology. Electronics work on DC and with a voltage range of -48vDC to +48vDC. 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