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 7818

What is LVS, DRC?

IBM, Intel,

10 61027

Who provides the DRC rules?

Intel,

5 11890

What is validation?

Intel,

2 14053

What is Cross Talk?

Intel,

4 12417

Different ways of implementing a comparator?

Intel,

1 6395

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

Intel,

4 8507

What is clock feed through?

Intel,

2 17342

Implement an Inverter using a single transistor?

Intel,

4 13088

What is Fowler-Nordheim Tunneling?

Intel,

2 8080

Insights of a Tri-state inverter?

Intel,

1 5374

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

Intel,

2458

Differences between Array and Booth Multipliers?

Intel,

4021

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

Intel,

3 18471

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

Intel,

13 37090

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Un-Answered Questions { VLSI }

Explain how MOSFET works?

3201

Draw a 6-T SRAM Cell and explain the Read and Write operations

1239

Draw a CMOS Inverter. Explain its transfer characteristics

1144

Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes considering Channel Length Modulation.

1155

In a SRAM layout, which metal layers would you prefer for Word Lines and Bit Lines? Why?

4079

what is verilog?

1071

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

1150

Given a layout, draw its transistor level circuit. (I was given a 3 input AND gate and a 2 input Multiplexer. You can expect any simple 2 or 3 input gates)

1161

Explain the Charge Sharing problem while sampling data from a Bus?

4668

Explain what is slack?

1023

What does the above code synthesize to?

2535

Explain what is Verilog?

1058

Write a VLSI program that implements a toll booth controller?

3949

Explain Cross section of an NMOS transistor?

985

What's the price in 1K quantity?

2793

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