14.77 Design the circuit of Fig. 14.32(b) to realize, at the output of the second (noninverting) integrator, a maximally flat low-pass function with ω3dB = 104 rad/s and unity dc gain. Use a clock frequency fc = 200 kHz and ...
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14.75 Repeat Exercise 14.24 for a clock frequency of 500 kHz.
14.74 For a dc voltage of 1 V applied to the input of the circuit of Fig. 14.30(b), in which C1 is 1 pF, what charge is transferred for each cycle of the two-phase clock? For a 200-kHz clock, what ...
14.73 For the switched-capacitor input circuit of Fig. 14.30(b), in which a clock frequency of 100 kHz is used, what input resistances correspond to capacitance C1 values of 0.1 pF, 0.5 pF, 1 pF, 5 pF, and 10 pF? 100 MΩ; ...
14.72 Design a fifth-order Butterworth low-pass filter that has a 3-dB bandwidth of 10 kHz and a dc gain of unity. Use the cascade connection of two circuits of the type shown in Fig. 14.29 and a first-order low-pass circuit ...
14.71 Use a cascade of the low-pass circuit in Fig. 14.29 and the high-pass circuit in Fig. 14.28(a) to realize a wide-band bandpass filter with 3-dB frequencies of 1 kHz and 100 kHz. The response of both circuits should be ...
14.70 Analyze the circuit in Fig. P14.70 to determine its transfer function T(s) ≡ Vo/Vi. Show that T(s) is that of a second-order bandpass filter and find ω0 and Q. For R1 = R2 = R, C4 = C, and ...
14.69 Consider the bandpass circuit shown in Fig. 14.27(a). Let C1 = C2 = C, R3 = R, R4 = R/4Q2, and CR = 2Q/ω0. Disconnect the positive input terminal of the op amp from ground and apply Vi through ...
14.68 Use the circuit in Fig. 14.27(a) to realize a bandpass filter with a center frequency of 10 kHz and a 3-dB bandwidth of 2.5 kHz. Give the values of all components and specify the center-frequency gain obtained. C1 = C2 ...