Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_1924

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Step 1 of 3 17.095P Refer to figure 17.40 (b) for the switched capacitor active-RC biquad filter. Assume that the values of two integrating capacitors are equal. = = = The relation between the capacitances C, and C₄ for switched capacitor active-RC biquad filter is, = KC = Here, fo is the resonant frequency and is the clock frequency. Substitute for for and 20x10⁻¹² for C. Therefore, the value of capacitances and C₄ is Step 2 of 3 The expression for the capacitance is, Substitute for for 20x10⁻¹² for C, and 20 for Q. =0.063 pF Step 3 of 3 The expression for the center frequency gain is, Centre frequency Rewrite as, Substitute 1 for Center frequency gain, and 0.063 pF for Therefore, the value of capacitances and is 0.063 pF.