VLSI Interview Questions
Questions Answers Views Company eMail

Explain CMOS Inverter transfer characteristics?

ADS,

3444

Explain sizing of the inverter?

Infosys,

3898

How do you size NMOS and PMOS transistors to increase the threshold voltage?

4 27639

What is Noise Margin? Explain the procedure to determine Noise Margin?

1978

Give the expression for CMOS switching power dissipation?

Cypress Semiconductor,

2 7394

What is Body Effect?

CG CoreEL, Cisco, TA,

2035

What happens to delay if you increase load capacitance?

Google,

1 2883

What are the limitations in increasing the power supply to reduce delay?

Infosys,

2 12203

How does Resistance of the metal lines vary with increasing thickness and increasing length?

Infosys,

3 12371

What happens if we increase the number of contacts or via from one metal layer to the next?

Infosys,

1 6700

Give the various techniques you know to minimize power consumption?

5 11214

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

2103

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

2474

What is the critical path in a SRAM?

2616

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

Infosys,

3593


Post New VLSI Questions

Un-Answered Questions { VLSI }

Draw a transistor level two input NAND gate. Explain its sizing (a) considering Vth (b) for equal rise and fall times

1069


what is the use of defpararm?

719


Explain the working of 4-bit Up/down Counter?

3983


Explain why present VLSI circuits use MOSFETs instead of BJTs?

645


In Verilog code what does “timescale 1 ns/ 1 ps” signifies?

693






What are the main issues associated with multiprocessor caches and how might you solve them?

1738


What types of high speed CMOS circuits have you designed?

2060


Are you familiar with the term snooping?

2919


What happens if we delay the enabling of Clock signal?

1803


How to improve these parameters? (Cascode topology, use long channel transistors)

1704


Explain depletion region.

615


Explain CMOS Inverter transfer characteristics?

3444


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

2009


What is the difference between synchronous and asynchronous reset?

618


What was your role in the silicon evaluation/product ramp? What tools did you use?

3210