WorksheetsBasic Opamp
Total questions: 9
Worksheet time: 5mins
The common-mode gain is ………..
very high
very low
always unity
unpredictable
If ADM = 3500 and ACM = 0.35, the CMRR is ……….
1225
10,000
80 dB
answers (1) and (3)
The output of a particular Op-amp increases 8V in 12μs. The slew rate is …….
90 V/μs
0.67 V/μs
1.5 V/μs
none of these
For an Op-amp with negative feedback, the output is …….
equal to the input
increased
fed back to the inverting input
fed back to the noninverting input
The use of negative feedback ………
reduces the voltage gain of an Op-amp
makes the Op-amp oscillate
makes linear operation possible
answers (1) and (2)
Negative feedback ………..
increases the input and output impedances
increases the input impedance and bandwidth
decreases the output impedance and bandwidth
does not affect impedance or bandwidth
A certain noninverting amplifier has Ri of 1 kΩ and Rf of 100 kΩ. The closed-loop voltage gain is ………
100,000
1000
101
100
A voltage follower ……….
has a voltage gain of 1
is noninverting
has no feedback resistor
has all of these
The Op-amp can amplify
a.c. signals only
d.c. signals only
both a.c. and d.c. signals
neither d.c. nor a.c. signals
