This article is contributed by my friend. He is currently working in Synopsys as a Design Intern.
This was an off campus recruitment and I got this opportunity through LinkedIn and profile was for AMS design intern. The total interview process consist of 3 rounds.
Round 1 (Technical) (Duration around 90-100 min):
There were two persons in the panel. They started with a formal introduction and then technical questions.
- Tell me about your Thesis Work.
- They drawn some RC circuits (4-5 combinations of such) and asked first to identify type of filters.
- What will be the time constant of each circuit?
- How many time constant needed to get it charged or discharged?
- Given a pulse input and asked to draw it’s transient behavior.
- Reason for that behavior.
- Asked me to draw single stage CS amplifier.
- Asked to write down it’s gain formula.
- Different ways to increase it’s gain.
- Problem of increasing Rd resistance (as I used one resistor at drain).
- What is the alternative to increase it drain impedance?
- Write down its pole zero values and compare it with common gate amplifier.
- They drawn one circuit and asked me to identify it (Sense Amplifier).
- Asked me to explain it’s working.
- Give some set of pulse inputs and asked me to find their outputs.
- Some more questions which I don’t remember now.
Round 2 (Technical Round) (Duration Around 80-90 min):
Again there were two members in the panel. Asked me to introduce yourself.
- Give a short introduction of all your projects.
- Asked me to explain two stage differential amplifier as it was mentioned in my resume.
- Draw the circuit that I have designed.
- Why the various capacitor was there especially that Miller capacitance.
- Approach to increase its gain.
- What was the phase margin? what I have aimed for?
- Asked me to draw it response for various phase margin.
- Why I have used NMOS as a driver circuit in both first and second stage.
- Explain slew rate for this circuit and what exactly it’s mean.
- How can I change this circuit to Op-amp.
- Asked me if I want more questions from them. I said yes.
- Explain Recovery and Removal time.
- What is Set up and Hold time?
- Some more questions which I don’t remember now.
Round 3 (HR Round):
- A short formal introduction.
- What do you know about Synopsys?
- If you are interested to join and what will be the date?
- If you have already any offer?