Exercise: Basic Op Amp Circuits

Questions for: Basic Op Amp Circuits

An op-amp has an open-loop gain of 90,000. Vsat = ±13 V. A differential voltage of 0.1 V p-p is applied between the inputs. What is the output voltage?
A:
13 V
B:
–13 V
C:
13 Vp-p
D:
26 Vp-p
Answer: D
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What circuit produces an output that approximates the area under the curve of an input function?
A:
integrator
B:
differentiator
C:
summing amplifier
D:
comparator
Answer: A
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In a flash A/D converter, the priority encoder is used to
A:
select the first input.
B:
select the highest value input.
C:
select the lowest value input.
D:
select the last input.
Answer: B
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Refer to the given figure. If Vin = 5 V, the rate of change of the output voltage in response to a single pulse input is:

A:
15.2 mV/s
B:
1.52 V/s
C:
1.52 mV/s
D:
15.2 V/s
Answer: C
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In a(n) ________, when the input voltage exceeds a specified reference voltage, the output changes state.
A:
integrator
B:
differentiator
C:
summing amplifier
D:
comparator
Answer: D
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