VLSI Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

VLSI Interview Questions

Questions Answers Views Company eMail

Why is Extraction performed?

Intel,

1 7898

What is LVS, DRC?

IBM, Intel,

10 61389

Who provides the DRC rules?

Intel,

5 12045

What is validation?

Intel,

2 14160

What is Cross Talk?

Intel,

4 12573

Different ways of implementing a comparator?

Intel,

1 6479

What r the phenomenon which come into play when the devices are scaled to the sub-micron lengths?

Intel,

4 8670

What is clock feed through?

Intel,

2 17487

Implement an Inverter using a single transistor?

Intel,

4 13309

What is Fowler-Nordheim Tunneling?

Intel,

2 8198

Insights of a Tri-state inverter?

Intel,

1 5450

If an/ap = 0.5, an/ap = 1, an/ap = 3, for 3 inverters draw the transfer characteristics?

Intel,

2501

Differences between Array and Booth Multipliers?

Intel,

4080

Explain the concept of a Clock Divider Circuit? Write a VHDL code for the same?

Intel,

3 18606

Which gate is normally preferred while implementing circuits using CMOS logic, NAND or NOR? Why?

Intel,

13 37451

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Un-Answered Questions { VLSI }

How does Vbe and Ic change with temperature?

3518

What are the steps required to solve setup and hold violations in vlsi?

1090

Explain the operation of a 6T-SRAM cell?

4513

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

1357

What is the difference between nmos and pmos technologies?

1115

Explain how binary number can give a signal or convert into a digital signal?

1127

Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

2841

Explain Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

1080

What are the various regions of operation of mosfet? How are those regions used?

1140

What are the different measures that are required to achieve the design for better yield?

1218

What are the different classification of the timing control?

1114

What is the purpose of having depletion mode device?

1053

why is the number of gate inputs to CMOS gates usually limited to four?

1346

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

3380

what is multiplexer?

1164

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