If the bandwidth of an amplifier is 20 kHe and open-loop gain is 200 – InterviewSolution

1.	If the bandwidth of an amplifier is 20 kHe and open-loop gain is 200 and β = 0.1, find the gain of the amplifier with negative feedback.
Answer» A= 200, β = 0.1, BW = 20 kHz . Gain with feedback is BW_F = (1 + Aβ) BW = (1 + 200 x 0.1) x 20 kHz = 21 x 20 kHz = 420 kHz

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