Chapter 4, Problem 4.49P

Consider the PMOS common−gate circuit in Figure P4.49. The transistor parameters are: $V_{TP}=-1\text{V}$ , $K_p=0.5{\text{mA/V}}^{\text{2}}$ , and $\lambda =0$ . (a) Determine $R_S$ and $R_D$ such that $I_{DQ}=0.75\text{mA}$ and $V_{SDQ}=6\text{V}$ . (b) Determine the input impedance $R_i$ and the output impedance $R_o$ . (c) Determine the load current $i_o$ and the output voltage ${\upsilon }_o$ , if $i_i=5\sin \text{ω}t\mu \text{A}$ .

Figure P4.49