An amplifier has a common-mode rejection ratio of CMRR = 87&B and differential gain A, = 20dB . What is the common-mode gain Ay in VV? a. b. Briefly explain why a unity-gain voltage follower (or “buffer") op-amp is useful in electronics design. C. Name one advantage and one disadvantage of using negative feedback.

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.3P
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1)
An amplifier has a common-mode rejection ratio of CMRR = 87AB and
differential gain A, = 20dB . What is the common-mode gain A, in V/V?
b.
Briefly explain why a unity-gain voltage follower (or "buffer") op-amp is useful in
electronics design.
с.
Name one advantage and one disadvantage of using negative feedback.
Transcribed Image Text:1) An amplifier has a common-mode rejection ratio of CMRR = 87AB and differential gain A, = 20dB . What is the common-mode gain A, in V/V? b. Briefly explain why a unity-gain voltage follower (or "buffer") op-amp is useful in electronics design. с. Name one advantage and one disadvantage of using negative feedback.
Name two ways to compensate for an unstable negative-feedback amplifier.
name two characteristic differences between inverting and non-
inverting amplifiers.
Transcribed Image Text:Name two ways to compensate for an unstable negative-feedback amplifier. name two characteristic differences between inverting and non- inverting amplifiers.
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