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b) The current sink shown in figure Q4b provides the amplifier with improved common mode rejection ratio (CMRR) i) ii) What is CMRR ? Describe how the circuit works to maintain a constant current, IT. If a 5.6V zener was used, evaluate the value of RE required to maintain a constant current, IT, of 200µA via a transistor whose current gain is 100. iii)

b) The current sink shown in figure Q4b provides the amplifier with improved common mode rejection ratio (CMRR) i) ii) What is CMRR ? Describe how the circuit works to maintain a constant current, IT. If a 5.6V zener was used, evaluate the value of RE required to maintain a constant current, IT, of 200µA via a transistor whose current gain is 100. iii)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Question 4 OV IT R ORE Vz -VDD Figure Q4b b) The current sink shown in figure Q4b provides the amplifier with improved common mode rejection ratio (CMRR) i) ii) What is CMRR ? Describe how the circuit works to maintain a constant current, IT. If a 5.6V zener was used, evaluate the value of RE required to maintain a constant current, IT, of 200µA via a transistor whose current gain is 100. iv) iii) Sketch a current source version of figure Q4b
Transcribed Image Text:Question 4 OV IT R ORE Vz -VDD Figure Q4b b) The current sink shown in figure Q4b provides the amplifier with improved common mode rejection ratio (CMRR) i) ii) What is CMRR ? Describe how the circuit works to maintain a constant current, IT. If a 5.6V zener was used, evaluate the value of RE required to maintain a constant current, IT, of 200µA via a transistor whose current gain is 100. iv) iii) Sketch a current source version of figure Q4b
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