(c) (d) Figure Figure Q1b shows an Op-amp with a bias current compensating resistor (Rp). R₁ V₂. Vp IB. R₂ W A • V₂ Figure Olb (i) Derive an expression for V. to quantify the effect of bias currents IB+ and IB-. [3] (ii) Explain how you would choose a value for Rp to reduce the output error due to the bias currents, IB+ and IB.. [3] Referring to an op-amp define what is meant by common-mode rejection ratio (CMRR) and explain the effect a finite CMRR would have on high-precision applications. [4] Page 2 of 7 Continued overleaf

(c) (d) Figure Figure Q1b shows an Op-amp with a bias current compensating resistor (Rp). R₁ V₂. Vp IB. R₂ W A • V₂ Figure Olb (i) Derive an expression for V. to quantify the effect of bias currents IB+ and IB-. [3] (ii) Explain how you would choose a value for Rp to reduce the output error due to the bias currents, IB+ and IB.. [3] Referring to an op-amp define what is meant by common-mode rejection ratio (CMRR) and explain the effect a finite CMRR would have on high-precision applications. [4] Page 2 of 7 Continued overleaf

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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