Chapter 4, Problem 4.13P

Consider the circuit in Figure 4.14 in the text. The circuit parameters are $V_{DD}=3.3\text{V}$ , $R_D=8\text{k}\Omega$ , $R_1=240\text{k}\Omega$ , $R_2=60\text{k}\Omega$ , and $R_{Si}=2\text{k}\Omega$ . The transistor parameters are $V_{TN}=0.4\text{V}$ , ${k^{\prime }}_n=100\mu {\text{A/V}}^{\text{2}}$ , $W/L=80$ , and $\lambda =0.02{\text{V}}^{-1}$ . (a) Determine the quiescent values $I_{DQ}$ and $V_{DSQ}$ .
(b) Find the small−signal parameters $g_m$ and $r_o$ . (c) Determine the small−signal voltage gain.