The output of a particular Op-amp increases 8V in 12µs. The slew rate is_______________?
A. 90 V/µs
B. 0.67 V/µs
C. 1.5 V/µs
D. none of these
Operational Amplifier
Negative feedback_______________?
Negative feedback_______________?
A. increases the input and output impedances
B. increases the input impedance and bandwidth
C. decreases the output impedance and bandwidth
D. does not affect impedance or bandwidth
The differential voltage gain of a differential amplifier is equal to RC divided by _______________?
The differential voltage gain of a differential amplifier is equal to RC divided by _______________?
A. r’e
B. r’e/2
C. 2r’e
D. RE
The common-mode voltage gain of a differential amplifier is equal to RC divided by _______________?
The common-mode voltage gain of a differential amplifier is equal to RC divided by _______________?
A. r’e
B. 2r’e
C. r’e/2
D. 2RE
The common-mode voltage gain is________________?
The common-mode voltage gain is________________?
A. smaller than differentail voltage gain
B. equal to differential voltage gain
C. greater than differential voltage gain
D. none of the above
The input impedance of a differential amplifier equals r’e times________________?
The input impedance of a differential amplifier equals r’e times________________?
A. ß
B. RE
C. RC
D. 2ß
The node voltage at the top of the til resistor is closes to________________?
The node voltage at the top of the til resistor is closes to________________?
A. collector supply voltage
B. zero
C. emitter supply voltage
D. tail current times base resistance
The Op-amp can amplify______________?
The Op-amp can amplify______________?
A. a.c. signals only
B. d.c. signals only
C. both a.c. and d.c. signals
D. neither d.c. nor a.c. signals
A certain noninverting amplifier has Ri of 1 kO and Rf of 100 kO. The closed-loop voltage gain is_____________?
A certain noninverting amplifier has Ri of 1 kO and Rf of 100 kO. The closed-loop voltage gain is_____________?
A. 100,000
B. 1000
C. 101
D. 100
For an Op-amp with negative feedback, the output is_________________?
For an Op-amp with negative feedback, the output is_________________?
A. equal to the input
B. increased
C. fed back to the inverting input
D. fed back to the noninverting input