The midband voltage gain of a common-source MOSFET amplifier is (A_{v}=-15 mathrm{~V} / mathrm{V}). The capacitances of

Question:

The midband voltage gain of a common-source MOSFET amplifier is $A_{v}=-15 \mathrm{~V} / \mathrm{V}$. The capacitances of the transistor are $C_{g s}=0.2 \mathrm{pF}$ and $C_{g d}=0.04 \mathrm{pF}$.

(a) Determine the input Miller capacitance.

(b) What equivalent input resistance (bias resistance and signal source resistance) would result in an upper corner frequency of $5 \mathrm{MHz}$ ?

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