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Analog IC Design Engineer Interview Questions


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How to make sure the 2-stage opamp is stable? How does the compensation work?

5 Answers

Use compensation capacitor. Look up pole splitting which uses Miller effect on the capacitor.

By constructing current mirror circuit using op-amp 741 through compensation resistor at the feedback side. Finally the input and output of the op-amp gets compensated.

Using Miller compensation. A compensation capacitor across the 2nd stage to create pole splitting. A series resistor to the cap might be needed to solve the rhp zero problem

TI Fellow asked me this question: If you're hired, your job will be to design a power supply, that I haven't been able to figure out. How will you go about it?

1 Answer

We have lunch right now, you are welcome to join us

1 Answer

Explain the concept of Differential Amplifiers?

1 Answer

In depth knowledge of CMOS circuits

1 Answer

They care more about ADC knowledge. Although the job title is RF design, the manager asked many ADC and mixed signal questions.

Fundamental analog, discreet time, switched capacitor, A/D converters.

3 Answers

Basic RF questions: Mixers, LNA, Oscillators. Signal Processing questions

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