- #1

DODGEVIPER13

- 672

- 0

## Homework Statement

Beta=100,Thermal Voltage=0.026 Volts, Va=infinity, and Vbe=0.75 Volts for the differential amplifier. Please look at the upload for a clearer picture.

## Homework Equations

Ad=betaRc/2(rpi+Rb)

Acm=-gmRc/(1+(2(1+beta)Ro/(rpi+Rb)))

## The Attempt at a Solution

I have uploaded my attempt but I am wondering if Ro is really zero I mean Va is infinity so I would think so but this would cause Acm=0 and CMRR= infinity this seems incorrect what am I doing wrong?