Question

A non-inverting amplifier using OP-amp is given in Figure Q4c. (8) Vout Vin 99 kN RL 1 kQ AoL = 10s Figure Q4c Amplifier has the following properties. Open loop gain is 105 Open loop output impedance is 40 N Open loop bandwidth is 10 Hz Then, calculate The closed loop voltage gain. The closed loop output impedance. The closed loop bandwidth. i) ii) iii)

Answer 1

Detailed answer is given in pictures attached below.

Given, open open open loop gain A = 105 boop output impedance, Ro'= 400 boop bandwidth, fo = coraz RE= 99 kr K, екп Since, Gain of feedback circuit B is given Rije. RARE B = 1 kr Ike tgg kr 100 SL i) closed boop voltage gain = Are

Date - La closed wop voltage goin. - gg.g 1 tros in closed bop output impedence- Ro (tor) 1+AB ROF = 40 = 39.96 m2 +1051 UD in closed trop bandwidth = to (1+AB) - f = 10 (2 + 1 x ) = 10.01 kHz 200