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OP-AMP Circuits

An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is_______________?

August 11, 2021December 17, 2018 by admin
An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is_______________?

A. 10 volts
B. 5 volts
C. 5/ volts
D. 5/2 volts

Categories OP-AMP Circuits Leave a comment

A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?

August 11, 2021December 17, 2018 by admin
A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?

A. 50KHz
B. 100KHz
C. 1000/17KHz
D. 1000/7.07KHz

Categories OP-AMP Circuits Leave a comment

A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?

August 11, 2021December 17, 2018 by admin
A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?

A. CMMR
B. Bandwidth
C. Slew rate
D. Open-loop gain

Categories OP-AMP Circuits Leave a comment

Assume that the op-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be______________?

August 11, 2021December 17, 2018 by admin
Assume that the op-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be______________?

A. Square wave
B. Triangular wave
C. Parabolic wave
D. Sine wave

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A differential amplifier has a differential gain of 20,000. CMMR=80dB. The common mode gain is given by_______________?

August 11, 2021December 17, 2018 by admin
A differential amplifier has a differential gain of 20,000. CMMR=80dB. The common mode gain is given by_______________?

A. 2
B. 1
C. 1/2
D. 0

Categories OP-AMP Circuits Leave a comment

Which of the following amplifier is used in a digital to analog converter?

August 11, 2021December 17, 2018 by admin
Which of the following amplifier is used in a digital to analog converter?

A. Non inverter
B. Voltage follower
C. Summer
D. Difference amplifier

Categories OP-AMP Circuits Leave a comment

When a step-input is given to an op-amp integrator, the output will be______________?

August 11, 2021December 17, 2018 by admin
When a step-input is given to an op-amp integrator, the output will be______________?

A. A ramp
B. A sinusoidal wave
C. A rectangular wave
D. A triangular wave with dc bias

Categories OP-AMP Circuits Leave a comment

For an ideal op-amp, which of the following is true?

August 11, 2021December 17, 2018 by admin
For an ideal op-amp, which of the following is true?

A. The differential voltage across the input terminals is zero
B. The current into the input terminals is zero
C. The current from output terminal is zero
D. The output resistance is zero

Categories OP-AMP Circuits Leave a comment

In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is________________?

August 11, 2021December 17, 2018 by admin
In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is________________?

A. 23dB
B. 25dB
C. 46dB
D. 50dB

Categories OP-AMP Circuits Leave a comment

Differential amplifiers are used in______________?

August 11, 2021December 17, 2018 by admin
Differential amplifiers are used in______________?

A. Instrumentation amplifiers
B. Voltage followers
C. Voltage regulators
D. Buffers

Categories OP-AMP Circuits Leave a comment
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