Assume a two-stage opamp has been optimally compensated for a noninverting closed-loop gain of 4 (i.e., ) using the procedure in section 6.2.2 so that the equivalent second pole is 43% above the...

Assume a two-stage opamp has been optimally compensated for a noninverting closed-loop gain of 4 (i.e., ) using the procedure in section 6.2.2 so that the equivalent second pole is 43% above the unity-gain frequency, , and the lead compensation zero is 70% above the unity-gain frequency, . What is the phase margin if the feedback network is modified to provide a closed-loop gain of 2 (i.e., )? What about a unity-gain configuration ( )?