Derive the output voltage of the S/H of Fig XXXXXXXXXXat the end of in terms of the input voltage at the end of , the output voltage at the end of from the previous period, and the capacitor ratio ....

Derive the output voltage of the S/H of Fig. 11.19 at the end of in terms of the input voltage at the end of , the output voltage at the end of from the previous period, and the capacitor ratio . Take the -transform of this difference equation, and substitute to find the frequency-domain transfer function of the S/H. Making the assumption that for , where is the sampling frequency, show that

                                     f–3 dB 1 2π ------C1 C2 -----f ≅ clk