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Lecture 14-Stability and Feedback

Lecture 14-Stability and Feedback - Lecture 14 Stability...

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EE 214 Lecture 14 (HO#20) B. Murmann 1 Lecture 14 Stability Analysis of Feedback Circuits Boris Murmann Stanford University [email protected] Copyright © 2004 by Boris Murmann
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EE 214 Lecture 14 (HO#20) B. Murmann 2 Overview Reading 9.3 (Stability) 8.8 (Return Ratio Analysis) Supplementary Handout "Feedback Systems" by Tom Lee (see web, optional) Introduction This lecture covers basics on the analysis of feedback amplifiers. Using a simple OTA with capacitive feedback as an example, we will study the so called "Return Ratio" method as a tool to assess stability and calculate the bandwidth of feedback amplifiers. Interestingly, most relevant performance metrics follow directly from the "return ratio" or loop gain of the circuit, which highlights the significance of this parameter in feedback system design.
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