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 7901

What is LVS, DRC?

IBM, Intel,

10 61391

Who provides the DRC rules?

Intel,

5 12046

What is validation?

Intel,

2 14161

What is Cross Talk?

Intel,

4 12575

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 8674

What is clock feed through?

Intel,

2 17489

Implement an Inverter using a single transistor?

Intel,

4 13311

What is Fowler-Nordheim Tunneling?

Intel,

2 8200

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,

2502

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 }

Explain Basic Stuff related to Perl?

1045

What is the difference between synchronous and asynchronous reset?

1094

Explain the working of Insights of an inverter ?

1269

What is the main function of metastability in vsdl?

1067

what is Slack?

1193

Draw the stick diagram of a NOR gate. Optimize it

1293

Give a big picture of the entire SRAM Layout showing your placements of SRAM Cells, Row Decoders, Column Decoders, Read Circuit, Write Circuit and Buffers

1116

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

1459

Explain various adders and difference between them?

1209

What is look up table in vlsi?

986

What is the function of enhancement mode transistor?

1117

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

3145

You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?

2676

what are three regions of operation of MOSFET and how are they used?

1242

What are the different design techniques required to create a layout for digital circuits?

1043

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