Recruiter questions: 1. Why this job? 2. What happens to performance of invertor when body is tied to -ve voltage? 3. How will propagation delay of invertor scaled with sizes of PMOS and NMOS? Director phone screen: 1. MOSFET capacitance variation with gate voltage, list three regions this C. 2. I-V characteristic of NMOS whose drain is tied to Vdd, Source/Body to Gnd and Gate.voltage is sweep from 0 to Vdd. Mention different regions of this curve. 3. How will NMOS drain current scale with temperature variation? 4.Consider a blackbox circuit that sources current 'I'. What tests will you perform on it?
Circuit Design Engineer Interview Questions
154 circuit design engineer interview questions shared by candidates
What is the difference between latches and flip-flops? What is the output of a flip-flop if the output is passed through an inverter and then fed back to the input?
Mobility questions, how to build a NAND and NOR gate, and the one I failed was about a transistor in cutoff where you need the drain voltage.
The same questions asked as the top one's review.
Describe the three regions of operation for an NMOS in detail.
How would you design your own synthesis tool ?
Setup time, hold time question about digital logic.
Asked me to draw circuits on paper and describe them over the phone..not an easy task to do this on the phone.
Mostly from my resume and projects I have done. Both interviewers asked basic theory questions to make sure I also know the theory well. Got invitation for the onsight.
How to size a NAND gate? What happens if PMOS is used for pull-down and NMOS is used for pull-up? What is the output range in this case?
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