The input offset current equals the_____________?
(A) difference between two base currents
(B) average of two base currents
(C) collector current divided by current gain
(D) none of these
The tail current in a differential amplifier equals ______________?
(A) difference between two emitter currents
(B) sum of two emitter currents
(C) collector current divided by current gain
(D) collector voltage divided by collector resistance
A common-mode signal is applied to ________________?
(A) the noninverting input
(B) the inverting input
(C) both iputs
(D) top of the tail resistor
The input stage of an Op-amp is usually a ________________?
(A) differential amplifier
(B) class B push-pull amplifier
(C) CE amplifier
(D) swamped amplifier
Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is________________?
(A) 1
(B) 2000
(C) 80 dB
(D) 100,000
If ADM = 3500 and ACM = 0.35, the CMRR is _______________?
(A) 1225
(B) 10,000
(C) 80 dB
(D) answers (A) and (B)
The common-mode gain is ________________?
(A) very high
(B) very low
(C) always unity
(D) unpredictable
In differential-mode, ______________?
(A) opposite polarity signals are applied to the inputs
(B) the gain is one
(C) the outputs are of different amplitudes
(D) only one supply voltage is used
The differential gain is _____________?
(A) very high
(B) very low
(C) dependent on input voltage
(D) about 100
When a differential amplifier is operated single-ended, _______________?
(A) the output is grounded
(B) one input is grounded and signal is applied to the other
(C) both inputs are connected together
(D) the output is not inverted