Question: For the difference amplifier as shown in the figure show that if each resistor has a tolerance of ±100 ? % (i.e., for, say, a 5% resistor, ? = 0.05) then the worst-case CMRR is given approximately by (given K = R2/R1 = R4/R3)
Options
A : 20 log [K+1/4?].
B : 20 log [K+1/2?].
C : 20 log [K+1/?].
D : 20 log [2K+2/?].
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