VLSI Interview Questions
Questions Answers Views Company eMail

Explain depletion region.

815

Explain the three regions of operation of a mosfet.

829

Explain what is multiplexer?

835

Explain what is scr (silicon controlled rectifier)?

846

Explain what is slack?

853

Explain what is the use of defpararm?

883

Give the cross-sectional diagram of the cmos.

762

Give various factors on which threshold voltage depends.

1009

How binary number can give a signal or convert into a digital signal?

897

How logical gates are controlled by boolean logic?

837

Mention what are three regions of operation of mosfet and how are they used?

816

What does it mean “the channel is pinched off”?

1126

What is threshold voltage?

909

What is the difference between cmos and bipolar technologies?

800

Write a program to explain the comparator?

893


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Un-Answered Questions { VLSI }

For a single computer processor computer system, what is the purpose of a processor cache and describe its operation?

2137


For a NMOS transistor acting as a pass transistor, say the gate is connected to VDD, give the output for a square pulse input going from 0 to VDD

1180


How about voltage source?

2024


What is the difference between the mealy and moore state machine?

810


Are you familiar with the term MESI?

2370


What was your role in the silicon evaluation or product ramp? What tools did you use?

2095


Draw the Cross Section of an Inverter? Clearly show all the connections between M1 and poly, M1 and diffusion layers etc?

3119


Describe the various effects of scaling?

4552


For an AND-OR implementation of a two input Mux, how do you test for Stuck-At-0 and Stuck-At-1 faults at the internal nodes? (You can expect a circuit with some redundant logic)

981


what is a sequential circuit?

816


How logical gates are controlled by boolean logic?

837


what is verilog?

842


What types of I/O have you designed? What were their size? Speed? Configuration? Voltage requirements?

2218


Write a program to explain the comparator?

893


Explain what is slack?

853