Chapter 11, Problem 11.88P

Consider the circuit in Figure $\text{P}\mathrm{11.88.}$ The bias currents $I_1$ and $I_2$ are such that a zero de output voltage is established. The transistor parameters are: $K_p=0.2\text{mA}/{\text{V}}^2,K_n=0.5\text{mA}/{\text{V}}^2,V_{TP}=-0.8\text{V},V_{TN}=+0.8\text{V},$ and ${\lambda }_n={\lambda }_p=0.01{\text{V}}^{-1}.$ Determine the small-signal voltage gain $A_v=v_o/v_{in}$ and the output resistance $R_o$ .