The difference amplifier in Figure 3 has resistor values R₁ = R3 = 10 k which are known exactly, however resistors R₂ and R4 are nominally 200 k but have unknown tolerances. In experiment the differential gain was measured to be 26 dB and the CMRR was measured to be 40 dB. Assuming an ideal op-amp determine the input resistance, common mode gain, and the unknown ratio between R₂ and R4 (R₂/R4).

The difference amplifier in Figure 3 has resistor values R₁ = R3 = 10 k which are known exactly, however resistors R₂ and R4 are nominally 200 k but have unknown tolerances. In experiment the differential gain was measured to be 26 dB and the CMRR was measured to be 40 dB. Assuming an ideal op-amp determine the input resistance, common mode gain, and the unknown ratio between R₂ and R4 (R₂/R4).

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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