VLSI Interview Questions - 3

1. Explain the voltage transfer characteristics of a CMOS Inverter.
Answer


2. What should be done to the size of a nMOS transistor in order to increase its threshold voltage?
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3. What are the advantages of CMOS technology?
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4. Give the expression for CMOS switching power dissipation.
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5. Why is static power dissipation very low in CMOS technology when compared to others?
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6. What is velocity saturation? What are its effects?
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7. Why are pMOS transistor networks generally used to produce high signals, while nMOS networks are used to product low signals?
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8. Expand: DTL, RTL, ECL, TTL, CMOS, BiCMOS.
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9. On IC schematics, transistors are usually labeled with two, or sometimes one number(s). What do each of those numbers mean?
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10. How do you calculate the delay in a CMOS circuit?
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3 Comments:

siva said...

Very useful for vlsi students thanks

Yanjie Phoebus Sun said...

Question 4: power should be proportional to frequency.

Anonymous said...

Switching power dissipation should be
(1/2)CV^2f

Frequency is multiplied

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