(a) For an integrated-circuit MOS cascode amplifier fed with a source having a very
Chapter 10, Problem 10.75(choose chapter or problem)
(a) For an integrated-circuit MOS cascode amplifier fed with a source having a very small resistance and loaded in a resistance equal to its Ro, use the expression for the unity-gain bandwidth in Fig. 10.29 to show that ft = 2nCox (W/L) 2(CL +Cgd ) ID (b) For nCox = 400 A/V2 , W/L = 20, CL = 20 fF, Cgd = 5 fF, and VA = 10 V, provide in table form ft (GHz), VOV (V), gm (mA/V), ro (k), Ro (M), AM (V/V), and fH (MHz) for ID = 100 A, 200 A, and 500 A.
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