Chapter 4, Problem 4.65P

Figure P4.65 shows a common−gate amplifier. The transistor parameters are $V_{TN}=0.6\text{V}$ , $V_{TP}=-0.6\text{V}$ , $K_n=2{\text{mA/V}}^{\text{2}}$ , $K_p=0.5{\text{mA/V}}^{\text{2}}$ , and ${\lambda }_n={\lambda }_p=0$ . (a) Find the values of $V_{SGLQ},V_{GSDQ}$ , and $V_{DSDQ}$ . (b) Derive the expression for the small−signal voltage gain in terms of $K_n$ and $K_p$ . (c) Calculate the value of the small−signal voltage gain $A_{\upsilon }=V_o/V_i$ .

Figure P4.65