(a) Calculate and sketch the output voltage waveform of the switched-capacitor integrator of Fig. 6.10a from t =0 to t =20 μs assuming a fixed Vs = 1 V and a clock rate of 1 MHz. Assume an ideal MOS op amp with infinite gain and zero output rise time. Assume ideal MOS switches with zero on-resistance and infinite off-resistance.

(b) Compare the result for (a) with the output waveform of the continuous-time equivalent circuit of Fig. 6.10c.

(c) Investigate the effect on the output voltage waveform in (a) of a finite voltage gain of 1000 in the MOS op amp.

Fig. 6.10 c:

Transcribed Image Text:

C, +o o+ Vo Vs R = fCs