A CS amplifier that can be represented by the equivalent circuit of Fig. 10.24 has Cgs =
Chapter 10, Problem 10.59(choose chapter or problem)
A CS amplifier that can be represented by the equivalent circuit of Fig. 10.24 has Cgs = 2 pF, Cgd = 0.1 pF, CL = 2 pF, gm = 4 mA/V, and R sig = R L = 20 k. Find the midband gain AM , the input capacitance Cin using the Miller approximation, and hence an estimate of the 3-dB frequency fH . Also, obtain another estimate of fH using open-circuit time constants. Which of the two estimates is more appropriate and why?
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