116. In a differential amplifier circuit, if an input signal is applied to either input with the other input connected to ground, the operation is referred to as ________.
(a) double-ended
(b) single-ended
(c) common-mode
(d) All of the above
117. The main feature of the differential amplifier is the ________ gain when opposite signals are applied to the inputs as compared to the ________ gain resulting from common inputs.
(a) very large, large
(b) very small, large
(c) very small, very large
(d) very large, very small
118. In double-ended (differential) input operation, ________.
(a) an input is applied between the two input terminals
(b) two separate signals are applied to the input terminals
(c) either an input is applied between the two input terminals or two separate signals are applied to the input terminals
(d) None of the above
119. If the same input is applied to both inputs, the operation is called ________.
(a) double-ended
(b) single-ended
(c) common-mode
(d) All of the above
120. In a differential connection, the signals that are opposite at the inputs are ________ amplified, and those that are common to the two inputs are ________ amplified.
(a) slightly, slightly
(b) slightly, highly
(c) highly, highly
(d) highly, slightly
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5555555555143. With negative feedback, the returning signal (a) is proportional to the output current (b) is proportional to the differential voltage gain (c) opposes the input signal (d) aids the input signal- 5555555555102. What is the difference voltage if the inputs are an ideal opposite signal? (a) The differential gain times twice the input signal. (b) The differential gain times the input signal. (c) The common-mode gain times twice the input signal. (d) The common-mode gain times the input signal.
- 5555555555106. What is the difference voltage if the inputs are an ideal in-phase signal? (a) The differential gain times twice the input signal. (b) The differential gain times the input signal. (c) The common-mode gain times twice the input signal. (d) The common-mode gain times the input signal.
- 5555555555188. With negative feedback, the returning signal: (a) aids the input signal (b) is proportional to output current (c) opposes the input signal (d) is proportional to differential voltage gain
- 5555555555145. A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms? (a) 1.4 mV rms (b) 650 mV rms (c) 4.55 V rms (d) 0.455 V rms