Figure 571
the MOSFETs in the Circuit of Fig $\mu_{n} C_{o x}=400 \mu \mathrm{A} / \mathrm{V}^{2}, V_{t}=0.4 \mathrm{~V}, \lambda=0, L=$

Essay

Figure 5.7.1
The MOSFETs in the circuit of Fig. 5.7.1 have $\mu_{n} C_{o x}=400 \mu \mathrm{A} / \mathrm{V}^{2}, V_{t}=0.4 \mathrm{~V}, \lambda=0, L=$ $0.4 \mu \mathrm{m}, W_{1}=2 \mu \mathrm{m}$ , and $W_{2}=W_{3}=10 \mu \mathrm{m}$ . Find $R$ to obtain a reference current $I_{\mathrm{REF}}$ of $40 \mu \mathrm{A}$ . Also, find the values of $V_{1}, I_{2}, V_{2}$ , and $V_{3}$ .