Differential Amplifier: a. For the circuit below, derive an expression

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Differential Amplifier: a. For the circuit below, derive an expression for the V0 in relation to V1 and V2. b. For a differential amplifier to reject common signal between the inputs V1 and V2, define a relationship between resistors R1 and R2, and separately, R3 and R4. Simplify the expression from your solution to part (a) given this relationship. c. You construct the circuit on a breadboard to measure CMRR. When V1 = V2 = 0.5 V, Vo = 1 V, and when V1 = 0 V and V2 = 0.1 V, Vo = 25 V. Calculate CMRR in dB.

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Differential Amplifier: a. For the circuit below, derive an expression for the $V_{0}$ in relation to $V_{1}$ and $V_{2}$ . b. For a differential amplifier to reject common signal between the inputs $V_{1}$ and $V_{2}$ , define a relationship between resistors $R_{1}$ and $R_{2}$ , and separately, $R_{3}$ and R4. Simplify the expression from your solution to part (a) given this relationship. c. You construct the circuit on a breadboard to measure CMRR. When $V_{1} = V_{2} = 0.5 V, V_{0} = 1 V$ , and when $V_{1} = 0 V$ and $V_{2} = 0.1 V, V_{0} = 25 V$ . Calculate CMRR in $d B$ .