My friend had referred me for this position. I got a call for telephonic interview a week later. Telephonic interview: 1.Noise Margin and some questions on NML and NMH for inverter connected back to back 2. Bandwidth related questions 3. Flip Flop and latches ( race-around and S-R invalid related questions ) 4. Time constant 5. RC circuit related This round is to just test your basics 1st round : This was done by manager. He will test your understanding on RC circuits charging,discharging graphs etc, transistors, op-amps, CMOS( resistance graph, transfer characteristic graph, region of operation, pass transistor). The manager usually doesn't scare u out by asking unrelated, he will see your understanding if you go somewhere wrong in analyse he will help and try u to make understand. I am sure you will surely learn many things from this interview 2nd round: wolf pack (done by 4 people) topics remain same , u might expect some questions on micro-controller and coding 3rd round: Same topics but some aptitude kind of questions to test your ability to think.