Exercise: Operational Amplifiers

Questions for: Operational Amplifiers

Negative feedback added to an op-amp ________ the bandwidth and ________ the gain.
A:
increases, increases
B:
increases, decreases
C:
decreases, decreases
D:
decreases, increases
Answer: B
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What is the voltage gain of the unity follower?
A:
0
B:
1
C:
–1
D:
Infinity
Answer: B
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In which of the following operations is the resulting output signal of the differential amplifier near zero?
A:
Single-ended
B:
Double-ended
C:
Common-mode
D:
None of the above
Answer: C
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A(n) ________ amplifier configuration has a higher input impedance and a lower output impedance than the op-amp itself.
A:
non-inverting
B:
inverting
C:
voltage-follower
D:
Answer: A
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Which of the following circuit conditions affect(s) the output offset voltage of an op-amp?
A:
An input offset voltage, VIO
B:
An input offset current, IIO
C:
Both an input offset voltage, VIO and an input offset current, IIO
D:
None of the above
Answer: C
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