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The equivalent circuit at the interface between the first and second stages of an op-amp is shown in Figure P12.88. The parameters are R_o1 = 2 M, R_i2= 750 k Ω, andC_i = 1.2 p_F.

(a) Determine the pole frequency for this part of the circuit.

(b) Determine the additional Miller capacitance CM that would need to be added so that the pole frequency is moved to f_{P D} = 6 Hz.

(c) If the gain of the second-stage amplifier is 1000, what is the required value of a feedback capacitor around the second-stage amplifier to produce this Miller capacitance.

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M91982797

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