(a) A differential-amplifier has a differential-mode gain of Ad = 250 and a common-mode rejection ratio of CMRRdB = ∞. A differential-mode input signal of vd = 1.5 sin ωt mV is applied along with a common-mode input signal of vcm = 3 sin ωt V. Assuming the common-mode gain is positive, determine the output voltage, (b) Repeat part (a) if the common-moderejection ratio is CMRRdB = 80 dB. (c) Repeat part (a) if the common mode rejection ratio is CMRRdB = 50 dB.
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