Assuming an ideal op-amp, and given the
differential amplifier shown with the following
resistor values:
R1=10.000k\Omega
R2=20.000k\Omega
R3=20.000k\Omega
R4=40.000k\Omega
a. Find the differential voltage gain
(V_(o))/(V_(i2)-V_(i1))
b. Find the common-mode voltage gain (V_(o))/(V_(icm)) when the two inputs are shorted to a single voltage V_(icm)
c. Find the Common-Mode-Rejection-Ratio (CMRR), which is defined as 20log_(10) (Differential gai(n)/(C)ommon-
mode gain).