Question

Assume that C=10pf, C1=500fF, and the switches and op amp are ideal. The switched are clocked with a complimentary nonoverlapping clock. One period of the clock waveform is shown below where the clock period of 1usec. If VIN=0.2sin(2000t), determine VOUT(t). Assume the op amp is ideal.

Problem 3 Assume that C=10pf, C1=500fF, and the switches and op amp are ideal. The switched are clocked with a complimentary nonoverlapping clock. One period of the clock waveform is shown below where the clock period of lusec. If Vin=0.2sin(2000), determine Vout(t). Assume the op amp is ideal. VIN VOUT

Answer 1

Ginen, Vin lout C = 500 ff = 500810-15 F C = lopf = 10x 10-12 f. Vin = 0.2 sin (2000€) W = 2000 radsec. w = 200 or I usec clock cycles o switches are on alternativele the . For each ois usee, Firstly, the reactance of capacitor: x = Jwc 00 X 10x10 12 - - 5x1072 XI = Rer - juci - 1x 2000 x SODX 10-15 Jwc jx2000 x 50x1015 - - j 100 x 10 ore

for the d. first ons usec, is dared. V - Vin + Vw - Vo = 0, Xci XCA [Vx=0 By virtual ground] .: Vo = - ( = 5 x 107 ) Vin - 100 X 107 Vo - (0.0s) (0-2 Sin 2000+) | Vo = – 0.01 sin 2000t. For the next ons usec, Pa is closed, d, is open in C, will discharge to the ground but Vo would remain the same