Problem $5$: PMOS MOSFET $(0$ to $20$ points$)$

$($a$)$ Run a DC bias on the PMOS amplifier in Figure $5$ and annotate the voltages and currents. Confirm that the PMOS is in saturation.

$($b$)$ Referring to Figure $5($below$),$ a PMOS amplifier is given. Assume the PMOS is in saturation. Calculate $($on paper$)$ the DC parameters $I_D$ and $V_{DS}$ and compare with simulation. Note that the PMOS is flipped $($in PSPICE$)$ to have the source attached to the $18$ V power supply.

$($c$)$ Calculate $($on paper$)$ the voltage gain $($Vout$2/$Vin$2)$ of the amplifier in Figure $5$ and compare with simulation results.

$($d$)$ Measure the voltage gain of the PMOS amplifier in Figure $5$ in two ways $-$ using AC Sweep and using Time Domain Transient.

IRF$9140$

$K_p=10\mathrm{.}15u$

$W=1\mathrm{.}9$

$L=2u$

Vto $=-3\mathrm{.}67$