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

VLSI Interview Questions

Questions Answers Views Company eMail

If not into production, how far did you follow the design and why did not you see it into production?

Intel,

2110

Insights of an inverter. Explain the working?

Intel,

1 10301

Insights of a 2 input NOR gate. Explain the working?

Infosys, Intel,

1 3676

Insights of a 2 input NAND gate. Explain the working?

Intel,

1 9001

Implement F= not (AB+CD) using CMOS gates?

Intel,

1 5805

Insights of a pass gate. Explain the working?

Intel,

4982

Why do we need both PMOS and NMOS transistors to implement a pass gate?

INEL, Intel,

3 14711

What does the above code synthesize to?

Intel,

2617

Cross section of a PMOS transistor?

Intel,

4776

Cross section of an NMOS transistor?

Intel,

3 9950

What is a D-latch? Write the VHDL Code for it?

Intel,

3 22620

Differences between D-Latch and D flip-flop?

AIT, Intel, Sibridge Technologies,

17 65494

Implement D flip-flop with a couple of latches? Write a VHDL Code for a D flip-flop?

Intel,

6 20606

What is latchup? Explain the methods used to prevent it?

Intel,

2 9678

What is charge sharing?

Cypress Semiconductor, Intel,

2 13538

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Un-Answered Questions { VLSI }

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

1213

Explain how MOSFET works?

3247

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

2512

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

3449

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

2843

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

1092

Basic Stuff related to Perl?

2831

What are the different ways in which antenna violation can be prevented?

1128

What is the main function of metastability in vsdl?

1073

For CMOS logic, give the various techniques you know to minimize power consumption

1416

What is the difference between the mealy and moore state machine?

1128

Explain the three regions of operation of a mosfet.

1098

Write a VLSI program that implements a toll booth controller?

3995

What is the difference between cmos and bipolar technologies?

1141

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

1311

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