Part A - Calculating the output voltage of a difference op-amp circuit For the circuit shown, determine Vo when R₁ = 5.2 kn, R₂ = 20 kn, V₂ = 70 mV, Vy = 40 mV, and Vcc = 15 V. Express your answer to three significant figures and include the appropriate units. You did not open hints for this part. ANSWER: Vo = Part B - Design of a difference op-amp circuit For the circuit shown, determine R₁ such that Vo = mx (V₂ - Vy). Assume m = 7.5 and R₂ = 100 kn and that the op-amp is in its linear region of operation, Express your answer to three significant figures. You did not open hints for this part. ANSWER: R₁ = ΚΩ R₁ R₁ www R₁ www R₂ R₂ R₂ www -V R₂ www + V₂ Į + V₂ T

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Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.