The circuit shown in Figure 4.1 has parameters (V_{D D}=2.5 mathrm{~V}) and (R_{D}=10 mathrm{k} Omega). The transistor

Question:

The circuit shown in Figure 4.1 has parameters $V_{D D}=2.5 \mathrm{~V}$ and $R_{D}=10 \mathrm{k} \Omega$. The transistor is biased at $I_{D Q}=0.12 \mathrm{~mA}$. The transistor parameters are $V_{T N}=0.3 \mathrm{~V}, k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}$, and $\lambda=0$.

(a) Design the $W / L$ ratio of the transistor such that the small-signal voltage gain is $A_{v}=-3.8$.

(b) Repeat part (a) for $A_{v}=-5.0$.

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