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Calculate the output voltage. If Vx=3.9Vpp and Vy = 5.5 Vpp sinewave at 1khz for the following circuit.

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in Linear Integrated Circuits by (37.1k points)
Calculate the output voltage. If Vx=3.9Vpp and Vy = 5.5 Vpp sinewave at 1khz for the following circuit.

(a) 11 Vpp sinewave at 1Khz

(b) -8Vpp Vpp sinewave at 1Khz

(c) -10 Vpp sinewave at 1Khz

(d) 6 Vpp sinewave at 1Khz

I have been asked this question during an internship interview.

The question is from Differential Amplifiers with Multiple Op-Amp topic in section Operational Amplifier Characteristics of Linear Integrated Circuits

1 Answer

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by (39.8k points)
The accurate choice is (b) -8Vpp Vpp sinewave at 1Khz

Discover the easiest explanation: Voltage gain, AD=-RF/ R1 = -15kΩ/3kΩ = -5kΩ.

The output voltage, Vo = – AD*(V x– V y) = 5*(3.9-5.5) = -8 Vpp sinewvae at 1Khz.

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