2.17 Consider the instrumentation amplifier of Fig. 2.20(b) with a common-mode input voltage of +5V (dc) and a differential input signal of 10-mV-peak sine wave. Let (2R1) = 1 kΩ, R2 = 0.5 MΩ, and R3 = R4 = 10 kΩ. Find the voltage at every node in the circuit. vI1 = 5 − 0.005 sin ωt; vI2 = 5 + 0.005 sin ωt; v−(op amp A1) = 5 − 0.005 sin ωt; v−(op amp A2) = 5 + 0.005 sin ωt; vO1 = 5 − 5.005 sin ωt; vO2 = 5 + 5.005 sin ωt; v− (A3) = v+(A3) = 2.5 + 2.5025 sin ωt; vO = 10.01 sin ωt (all in volts)

Home/2.17 Consider the instrumentation amplifier of Fig. 2.20(b) with a common-mode input voltage of +5V (dc) and a differential input signal of 10-mV-peak sine wave. Let (2R1) = 1 kΩ, R2 = 0.5 MΩ, and R3 = R4 = 10 kΩ. Find the voltage at every node in the circuit. vI1 = 5 − 0.005 sin ωt; vI2 = 5 + 0.005 sin ωt; v−(op amp A1) = 5 − 0.005 sin ωt; v−(op amp A2) = 5 + 0.005 sin ωt; vO1 = 5 − 5.005 sin ωt; vO2 = 5 + 5.005 sin ωt; v− (A3) = v+(A3) = 2.5 + 2.5025 sin ωt; vO = 10.01 sin ωt (all in volts)