4. Find the required phase margin for an op-amp such that when it is configured in a unity-gain feedback (shown below), the magnitude frequency response of the closed-loop system shows no peaking (i.e., 0% peaking) at the gain crossover frequency (i.e., at the frequency where the magnitude of the open-loop gain of the opamp is 1)?

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4. Find the required phase margin for an op-amp such that when it is configured in a unity-gain
feedback (shown below), the magnitude frequency response of the closed-loop system shows no
peaking (i.e., 0% peaking) at the gain crossover frequency (i.e., at the frequency where the
magnitude of the open-loop gain of the opamp is 1)?
Vin O
+
VDD
GND
-O Vout
Transcribed Image Text:4. Find the required phase margin for an op-amp such that when it is configured in a unity-gain feedback (shown below), the magnitude frequency response of the closed-loop system shows no peaking (i.e., 0% peaking) at the gain crossover frequency (i.e., at the frequency where the magnitude of the open-loop gain of the opamp is 1)? Vin O + VDD GND -O Vout
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