1) Which among the following serves as an input stage to most of the op-amps due to its compatibility with IC technology?
a. Differential amplifier
b. Cascode amplifier
c. Operational transconductance amplifiers (OTAs)
d. Voltage operational amplifier
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Answer
Explanation
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ANSWER: Differential amplifier
Explanation:
No explanation is available for this question!
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2) PSSR can be defined as the product of the ratio of change in supply voltage to change in output voltage of op-amp caused by the change in power supply & _______ of op-amp.
a. Open-loop gain
b. Closed-loop gain
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: Open-loop gain
Explanation:
No explanation is available for this question!
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3) According to the principle of current mirror, if gate-source potentials of two identical MOS transistors are equal, then the channel currents should be _______
a. Equal
b. Different
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: Equal
Explanation:
No explanation is available for this question!
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4) In two-stage op-amp, what is the purpose of compensation circuitry?
a. To provide high gain
b. To lower output resistance & maintain large signal swing
c. To establish proper operating point for each transistor in its quiescent state
d. To achieve stable closed-loop performance
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Answer
Explanation
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ANSWER: To achieve stable closed-loop performance
Explanation:
No explanation is available for this question!
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5) An ideal op-amp has ________
a. Infinite input resistance
b. Infinite differential voltage gain
c. Zero output resistance
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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6) On the basis of an active load, which type of inverting CMOS amplifier represents low gain with highly predictable small and large signal characteristics?
a. Active PMOS load inverter
b. Current source load inverter
c. Push-pull inverter
d. None of the above
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Answer
Explanation
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ANSWER: Active PMOS load inverter
Explanation:
No explanation is available for this question!
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7) In MOS devices, the current at any instant of time is ______of the voltage across their terminals.
a. constant & dependent
b. constant & independent
c. variable & dependent
d. variable & independent
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Answer
Explanation
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ANSWER: constant & independent
Explanation:
No explanation is available for this question!
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8) Which among the following is/are regarded as an/the active resistor/s?
a. MOS diode
b. MOS transistor
c. MOS switch
d. All of the above
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Answer
Explanation
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ANSWER: MOS diode
Explanation:
No explanation is available for this question!
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9) In MOS switch, clock feedthrough effect is also known as __________.
A. charge injection
B. charge feedthrough
C. charge carrier
D. charge ejaculation
a. A & B
b. B & C
c. C & D
d. B & D
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Answer
Explanation
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ANSWER: A & B
Explanation:
No explanation is available for this question!
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10) Which among the following can be regarded as an/the application/s of MOS switch in an IC design?
a. Multiplexing & Modulation
b. Transmission gate in digital circuits
c. Simulation of a resistor
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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