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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 13533

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 16227

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 11682

What happens if we delay the enabling of Clock signal?

2372

What?s the difference between Testing & Verification?

Infosys,

6 30615

How can you model a SRAM at RTL Level?

Infosys,

5736

what is Latch up?How to avoid Latch up?

3 24731

What happens if we delay the enabling of Clock signal?

4 7241

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

4732

Explain why & how a MOSFET works?

Infosys,

2 7128

Explain the various MOSFET Capacitances & their significance?

1 23446


Post New VLSI Questions

Un-Answered Questions { VLSI }

Are you familiar with the term MESI?

2743


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

2104


Draw the Differential Sense Amplifier and explain its working. Any idea how to size this circuit? (Consider Channel Length Modulation)

1370


Implement a 2 I/P and gate using Tran gates?

4010


In the design of a large inverter, why do we prefer to connect small transistors in parallel (thus increasing effective width) rather than lay out one transistor with large width?

1195


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

2187


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

2337


What are the different classification of the timing control?

1116


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

2328


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

3004


What is Latch Up? Explain Latch Up with cross section of a CMOS Inverter. How do you avoid Latch Up?

1338


You have three adjacent parallel metal lines. Two out of phase signals pass through the outer two metal lines. Draw the waveforms in the centre metal line due to interference. Now, draw the signals if the signals in outer metal lines are in phase with each other

1573


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

4662


Explain how logical gates are controlled by Boolean logic?

1192


What products have you designed which have entered high volume production?

2448