need help 3 pole compensation pspice A 3-pole amplifier is to have the following

Question

need help 3 pole compensation pspice

A 3-pole amplifier is to have the following characteristics: Poles at f_1 = 100 kHz, f_2 = 600 kHz, f_3 = 650 kHz Open-circuit voltage gain A_o = 20,000 Input resistance R_in = 10 k Ohm Output resistance R_o = 30 Ohm Load resistance R_L = 12 k Ohm All resistors in all three stages of the amplifier are to be 10 k Ohm It is assumed that the feedback is a series voltage type with gain=1000. Add a compensation stage (a pole at f_c) to the circuit with the feedback in place, so that the phase margin is 45*, assuming that beta = 0.001. Using PSpice, obtain Bode Plots (Magnitude and Phase) of the compensated amplifier. Determine the Gain Margin (GM), the Phase Margin (PM), and the corresponding frequencies f_GM and f_PM. Also, determine and show a plot of the transient response for the output voltage. Give your comments.

Explanation / Answer

GM=50 PM=30

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