Problem #$5($Again$...)$: In the schematic diagram below, assume the following:

$VDD=+3V,VSS=-3V.$

the ratio beside each transistor is the $\frac{W}{L}$ ratio,

all n$-$type devices have $k_n^{\text{'}}=0\mathrm{.}1m\frac{A}{V^2}$ and $V_t=0\mathrm{.}6V$ and $=0\mathrm{.}05V^{-1}.$

all p$-$type devices have $k_p^{\text{'}}=0\mathrm{.}04m\frac{A}{V^2}$ and $V_t=-0\mathrm{.}8V$ and $=0\mathrm{.}04V^{-1}.$

all transistors in the saturation region.

$v_{+}=v_{-}=0V$ for DC $.$

$($b$)$ Find the midband gain $\frac{v_{ou}}{v_{+}-v_{-}}$

$($c$)$ The $10$ pF is placed in the circuit to increase $C_{gd8}$ to create a single, dominant high frequency pole. Assuming all other capacitors have negligible effect, estimate the high frequency cutoff $f_H.$

$($d$)$ Add a resistive feedback network to the amplifier to form a non$-$inverting amplifier with a gain of $4,$ then estimate the resulting bandwidth and output impedance. Rowt $f=$Rin$(1+A,B)$

D$)\frac{A}{1+4B}=\frac{34\mathrm{.}7}{1+344(\frac{1}{4})}=3\mathrm{.}45$

Putf $=\frac{\text{R}\text{o}\text{u}\text{t}}{1+A},f_{DP}=f_P(1+A)$

Rat $=$ rdruine$\frac{\frac{?}{?}}{r}$drnins

$=SK$

$=2\mathrm{.}24$

$P_{\text{C}\text{H}\text{A}}=\frac{2\mathrm{.}2k}{1+(399)(\frac{1}{4})}25\mathrm{.}2$