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

VLSI Interview Questions

Questions Answers Views Company eMail

What happens to delay if we include a resistance at the output of a CMOS circuit?

Infosys,

1 13535

Give the expression for calculating Delay in CMOS circuit?

Infosys,

1 7594

what is charge sharing?

Intel,

2382

Why don?t we use just one NMOS or PMOS transistor as a transmission gate?

Infosys,

2 16229

Explain the working of differential sense amplifier?

1 6551

What happens if we use an Inverter instead of the Differential Sense Amplifier?

Infosys,

3314

What?s the critical path in a SRAM?

Infosys, Intel, Texas,

2 11685

What happens if we delay the enabling of Clock signal?

2374

What?s the difference between Testing & Verification?

Infosys,

6 30624

How can you model a SRAM at RTL Level?

Infosys,

5737

what is Latch up?How to avoid Latch up?

3 24734

What happens if we delay the enabling of Clock signal?

4 7247

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

4733

Explain why & how a MOSFET works?

Infosys,

2 7135

Explain the various MOSFET Capacitances & their significance?

1 23446

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Un-Answered Questions { VLSI }

What is Body Effect?

2521

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

3144

What are the changes that are provided to meet design power targets?

1122

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

1242

What is the purpose of having depletion mode device?

1056

Explain depletion region.

1036

Explain the operation considering a two processor computer system with a cache for each processor.

2856

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 is threshold voltage?

1187

Mention what are the two types of procedural blocks in Verilog?

1307

Explain the operation of a 6T-SRAM cell?

4513

Explain how Verilog is different to normal programming language?

1280

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

1082

Design an 8 is to 3 encoder using 4 is to encoder?

1333

What transistor level design tools are you proficient with? What types of designs were they used on?

3448

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