March 2009
Intermediate to advanced
648 pages
12h 58m
English
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Chapter 10. Voltage and Current Feedback Op Amp Comparison
Ron Mancini and James Karki
10.1. Introduction
The name operational amplifier was given to voltage feedback amplifiers (VFA) when they were the only op amps in existence. These new (they were new in the late 1940s) amplifiers could be programmed with external components to perform various math operations on a signal, so they were nicknamed op amps. Current feedback amplifiers (CFA) have been around approximately 20 years, but their popularity increased in only the last several years. Two factors limit the popularity of CFAs, their application difficulty and lack of precision.
The VFA is a familiar component, and several variations of internally compensated VFAs can be used with little application ...
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