30 pts The NMOS transistor is specified to have $V_{tn} = 0.4V$, $k_n = 4 mA/V^2$, and $\lambda=0$. The voltage at the source and the drain are measured and found to be $-0.6V$ and $+0.2V$, respectively.
$+1 V$
$R_D$
$V_o$
$R_S$
$-1 V$
(a) What current $I_D$ is flowing, and what must the values of $R_D$ and $R_S$ be?
$I_D = 80 \mu A, R_D = 10 k\Omega, R_S = 5 k\Omega$
(b) What is the largest value for $R_D$ if the transistor is to remain in the saturation region.
$R_{D,max} = 17.5 k\Omega$