Name:
You need to show the procedures how the results are obtained. Express your
final answers in 3 significant figures.
5
1. Refer to the following amplifier. Given: $V_{DD} = \frac{5}{V}$, $V_{tp} = 0.4$ V, $V_{tn} = 0.5$ V, $\mu_p C_{ox}$
$= 80 \mu A/V^2$, $\mu_n C_{ox} = 120 \mu A/V^2$, L = 32 nm, W = 0.4 $\mu m$, $V'_A p = 40$ V/$\mu m$, $V'_A n = 60$
V/$\mu m$. (50 points)
(a) If $I_D = 0.1$ mA is required, calculate the bias voltage needed for each transistor,
i.e., the DC voltage on each gate. (20 points)
(b) Calculate the output resistance, $R_o$. (15 points)
(c) If $v_i = 10$ mV, find $v_o$. (15 points)
$V_{DD}$
$V_{G40}$
$Q_4$
$V_{G30}$
$Q_3$
$V_{G20}$
$Q_2$
$v_o$
$v_i$
$Q_1$
1