Sept 2013, Initially I had an on campus interview in a career fair. they asked me 2-3 simple and then hard questions and I answered well, then they scheduled an on campus interview. Initially they asked the difference between MOS and BJT. I said current noise and so on. Also a few questions on PLL. In the on campus interview they asked about a source follower. Then I had to do a presentation of a design that I had done through skype interview. They asked a few questions not so hard regarding that design. On the on site interview there were 2 groups. Th first was tough. They asked many many questions on PLL I answered most of it but had not review it so did not answer all the questions. The second group was good only a question on phase margin, stability, simple OTA and also many questions on first order RC circuits. like the step response and so on. I though I did very well but apparently was not enough!