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 7914

What is LVS, DRC?

IBM, Intel,

10 61432

Who provides the DRC rules?

Intel,

5 12076

What is validation?

Intel,

2 14179

What is Cross Talk?

Intel,

4 12596

Different ways of implementing a comparator?

Intel,

1 6489

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

Intel,

4 8696

What is clock feed through?

Intel,

2 17506

Implement an Inverter using a single transistor?

Intel,

4 13332

What is Fowler-Nordheim Tunneling?

Intel,

2 8216

Insights of a Tri-state inverter?

Intel,

1 5458

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

Intel,

2514

Differences between Array and Booth Multipliers?

Intel,

4091

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

Intel,

3 18624

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

Intel,

13 37499

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Un-Answered Questions { VLSI }

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

1514

Explain about 6-T XOR gate?

1296

Explain depletion region.

1052

What types of CMOS memories have you designed? What were their size? Speed?

4665

What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

3274

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

1051

Approximately, what were the sizes of your transistors in the SRAM cell? How did you arrive at those sizes?

1155

Explain the operation of a 6T-SRAM cell?

4521

Implement a function with both ratioed and domino logic and merits and demerits of each logic?

3808

Explain CMOS Inverter transfer characteristics?

3932

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

1140

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

3150

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

1248

what is Slack?

1197

what is the use of defpararm?

1154

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