Basic analog/mixed-signal circuit design concepts
Mixed Signal Interview Questions
280 mixed signal interview questions shared by candidates
What is MDAC gain in 2.5bit-per-stage in pipelined ADC? I understood the answer after the interview... In the continuous-time sigma-delta modulator, can the gain-boosting amplifier be designed with a lower bandwidth? This is really hard to understand for new college grads if you don't have experience in designing that... Why is the intrinsic gain of BJT is higher than that of MOSFET? You need to review that the p-substrate in NMOS is lightly doped and and therefore more sensitive to reverse bias, and this is also where channel length modulation comes into the picture. Some of the circuit problems are really novel and I have to come up with new techniques to analyze it.
RF: Receiver blocks, Capacitor behavior in AC/DC circuits, Filters, intermodulation.
noise in swtich capacity circuit
Few questions on LDO and Bandgap reference
Single ended CMOS based differential amplifier operation Mark inverting and non inverting terminals Derive expression for gain and output resistance and it's poles and zeros
All the questions are related to My Resume.
Draw a NAND using cmos gates
Transmission gate schematic?
Mostly very basic Device Physics questions. Not very complicated and some of the questions were: 1. Describe the operation of NMOS and PMOS, 2. What is body effect? How does it affect the gate voltage. 3. Describe the operating regions of NMOS transistor 4. If gate voltage is 2V and drain voltage is is 2V what is the source voltage? 5. What factors affect threshold voltage? Explain them 6. What is channel length modulation?
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