1. For the circuit in Figure 1 find an algebraic expressions for the voltage gain $A_v$ (4 points), input resistance $R_{in}$ (1 point), and output resistance $R_o$ (2 points) in terms of the circuit resistances ($R_1$, $R_2$, $R_{S1}$, $R_{S2}$, $R_{D1}$, & $R_T$) and the transistor small signal parameters ($g_{m1}$, $g_{m2}$, $r_{o1}$, & $r_{o2}$).
Figure 1:
$V^+ = 1.8 V$
$R_{S1}$
$R_1$
$R_{in}$
$M_1$
$M_2$
$R_o$
$C_C$
$v_i$
$R_2$
$R_{D1}$
$R_{S2}$
$V^- = -1.8 V$
