Determine the voltage gain of the amplifier ($$v_o/v_i$$) shown in Figure 3. Assume $$V_{DD}= 20 V$$, $$K'_n (W/L)= 2 mA/V^2$$, $$V_t=1 V$$, $$R_1=2.5 K\Omega$$, $$R_2=2.5K\Omega$$, $$R_3=0.25 K\Omega$$, $$R_4=400 K\Omega$$, $$R_5=100 K\Omega$$, $$R_6=1 M\Omega$$.
$$V_{DD}$$
$$V_{DD}$$
R4
R1
$$v_i$$
$$v_O$$
R6
R2
R5
R3
Figure 3.
