Chapter 11, Problem 11.3TYU

Assume the differential-mode gain of a diff-amp is $A_d=80$ and the common-mode gain is $A_{cm}=-\mathrm{0.20.}$ Determine the output voltage for input signals of: (a) $v_1=0.995\sin \omega t$ V and $v_2=1.005\sin \omega t\text{V};$ and $(\text{b})v_1=$ $2-0.005\sin \omega t\text{V}$ and $v_2=2+0.005\sin \omega t\text{V}.$ (Ans. (a) $v_o=-1.0\sin \omega t\text{V}$ (b) $v_o=-0.4-0.8\sin \omega t\text{V})$ .