An op-amp has a single-pole, open loop response with the dc open loop gain of A0=20,000 and the pole frequency at fp=40 Hz.
A. If this amplifier is connected as a non-inverting amplifier configuration with the closed loop gain of 50, find the frequency at which the loop gain |Aß|=1, find the phase margin.
B. If the above amplifier is wired as a unity gain buffer configuration, what will then be the frequency at which the loop gain |Aß|=1?