VLSI Interview Questions
Questions Answers Views Company eMail

what is conductance and valence band?

1 4050

What is Fermi level?

5 5721

How does Vbe and Ic change with temperature?

Qualcomm,

2179




If the substrate doping concentration increase, or temperature increases, how will Vt change? it increase or decrease?

1 2020

what is Channel length modulation?

Intel,

2 2744

what is the doping?

5 4108

How does a pn junction works?

Wipro,

2 4371

What is the depletion region?

1 3547




Tell me the parameters as many as possible you know that used to character an amplifier?

1 1282

What are the two types of noise of MOSFET, how to eliminate them?(Thermal and Flicker).

Analog Devices,

4 9740

What is the build-in potential?

Wipro,

1 1172

Tell me how MOSFET works.

1285

For a 0.18um and 0.8um technology MOSFET, which has a higher cutoff frequency?

2 8410

How does a Bandgap Voltage reference work?

2388

What is the ideal input and output resistance of a current source?

1851


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Un-Answered Questions { VLSI }

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

1036


Explain the Various steps in Synthesis?

2216


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

1170


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

2790


How about voltage source?

1160






Are you familiar with the term MESI?

1403


Draw the Layout of an Inverter?

1347


6-T XOR gate?

3013


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

1625


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

1708


Write a VLSI program that implements a toll booth controller?

2836


Tell me how MOSFET works.

1285


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

1114


Cross section of a PMOS transistor?

3479


Differences between Array and Booth Multipliers?

2830