QUESTION $1$

$(5$ Marks$)$

For the circuit in Figure $1,$ the bias voltages are changed to $V+=3V$ and $V-=-3V.$ The PMOS transistor parameters are: $VTP=-0\mathrm{.}4V,K^{\text{'}}p=40u\frac{A}{V}2,$ and $\frac{W}{L}=40,=0\mathrm{.}02V-1.RS=1\mathrm{.}2k,RD=2k.VSDQ=2\mathrm{.}3V.$ The load resistor is $RL=2k.$

a$)$ Determine VGS and IDQ

b$)$ Draw the AC small signal equivalent circuit.

c$)$ Find the small signal transistor parameters $g_m$ and $r_0.$

d$)$ Calculate small$-$ signal voltage gain.

Fig. $1$