(A)


(B)
Figure 5 $V_{t}=0.4 \mathrm{~V}, k_{n}^{\prime}=0.4 \mathrm{~mA} / \mathrm{V}^{2}, \lambda=0$

(a)


(b)
Figure 5.2.1
The MOSFETs in the circuits of Fig. 5.2.1 have $V_{t}=0.4 \mathrm{~V}, k_{n}^{\prime}=0.4 \mathrm{~mA} / \mathrm{V}^{2}, \lambda=0$ , and $L=$ $0.4 \mu \mathrm{m}$ .
(a) For the circuit in Fig. 5.2.1(a), find the values of $W$ and $R_{D}$ to operate the MOSFET at $I_{D}=$ $0.2 \mathrm{~mA}$ and $V_{D}=0.6 \mathrm{~V}$ .
(b) For the circuit in Fig. 5.2.1(b), find $W_{1}, W_{2}$ , and $W_{3}$ to obtain $V_{1}=0.5 \mathrm{~V}$ and $V_{2}=1.1 \mathrm{~V}$ .