VLSI Interview Questions with Answers - 1

1. Why does the present VLSI circuits use MOSFETs instead of BJTs?
Answer


2. What are the various regions of operation of MOSFET? How are those regions used?
Answer

3. What is threshold voltage?
Answer

4. What does it mean "the channel is pinched off"?
Answer

5. Explain the three regions of operation of a MOSFET.
Answer

6. What is channel-length modulation?
Answer

7. Explain depletion region.
Answer

8. What is body effect?
Answer

9. Give various factors on which threshold voltage depends.
Answer

10. Give the Cross-sectional diagram of the CMOS.
Answer

24 Comments:

carlos.roberto741 said...

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Anonymous said...

thanks....its good...i refershed all concepts in single post...

ajaykumar said...

good information and good arrangement of Q's and anws....thank you....

Voices in my head said...

good information,very useful !
Thanks for such a nice blog

Shweta said...

I find that all the data has been copied exactly from Microelectronics Circuits by Sedra & Smith.. Better to read that book instead of mugging up these answers.

Pritesh Srivastava said...

thanks sir for such a great post which helps in refreshing the whole concept in just few minutes..
No need to go through books any more to revise things.
I think Thanks will be a small word for this fantastic work...

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Anonymous said...

please keep on posting these kind of Q & A so tht it will beneficial fr us.

abs said...

I m not able to view d ans

Anonymous said...

haii.. thankng u for posting. so good to view this one. looking for some more posts. thanks

Anonymous said...

please post any job openings related to Electronics/VLSI. THANK U.

Anonymous said...

its good.......

Seshu Bandaru said...

excellent
its very useful

Anonymous said...

very helpful..thank u :)

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Kalpana Balasubramanian said...

Very useful information...keep posting and sincere thanks for the wonderful work

Dakshina Mudunkotuwa said...

Isnt triode region used for amplification.? cutoff and saturation are used as switch right?

Divya Rajagopalan said...

Yeah .. The answer for 2nd question is wrong .. In the cut off region and saturation region MOSFET acts as a switch . In linear or the triode region, the magnitude of current increases linearly with increasing drain voltage. So it acts as an amplifier in linear region .

srikanth cheekoti said...

@Divya you are correct...!!!

Anonymous said...

Saturation region of MOSFET is used for amplification.Cut off and linear as switch.

Richard Lincoln Paulraj said...

Saturation region of MOSFET is used for amplification.Cut off and linear as switch.

Anonymous said...

i'm unable to view the answers . please help

Karthika Shree said...

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koushik hk said...
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