A Common-Source Amplifier Is Fed from a Signal Source Having $R_{\mathrm{sig}}=100 \mathrm{k} \Omega$

A common-source amplifier is fed from a signal source having a resistance $R_{\mathrm{sig}}=100 \mathrm{k} \Omega$ and has a load resistance $R_{L}=100 \mathrm{k} \Omega$ . The MOSFET has $C_{g s}=0.1 \mathrm{pF}, C_{g d}=50 \mathrm{fF}, g_{m}=1 \mathrm{~mA} / \mathrm{V}$ , and $r_{o}=$ $100 \mathrm{k} \Omega$ . The total capacitance between the output node and ground is $C_{L}=0.1 \mathrm{pF}$ .
(a) Find the midband gain.
(b) Use the method of open-circuit time constants to obtain an estimate of the upper 3-dB frequency, $f_{H}$ .

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Refer to Figure 10.1.1


Figure 10.1....

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