The parameters for the circuit in Figure 10.17 are (V^{+}=+5 mathrm{~V}) and (V^{-}=0). The transistor parameters are

Question:

The parameters for the circuit in Figure 10.17 are $V^{+}=+5 \mathrm{~V}$ and $V^{-}=0$. The transistor parameters are $V_{T N}=0.7 \mathrm{~V}, k_{n}^{\prime}=60 \mu \mathrm{A} / \mathrm{V}^{2}$, and $\lambda=0.015 \mathrm{~V}^{-1}$. The transistor width-to-length ratios are $(W / L)_{1}=20$, $(W / L)_{2}=12$, and $(W / L)_{3}=3$. Determine

(a) $I_{\mathrm{REF}}$,

(b) $I_{O}$ at $V_{D S 2}=$ $1.5 \mathrm{~V}$, and

(c) $I_{O}$ at $V_{D S 2}=3 \mathrm{~V}$.

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