Rail-to-rail operational amplifier circuits to extract the mean (common mode) voltage of two input signals

Rail-to-rail operational amplifier circuits to extract the mean (common mode) voltage of two input signals

A rail-to-rail operational amplifier to extract a true mean of two signals. The amplifier includes a first amplifier input stage adapted to operate when a mean of the two signals is near an upper rail voltage. A second amplifier input stage is adapted to operate when the mean of the two signals is n...

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1. Verfasser: MOLE PETER J
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AMPLIFIERS
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description A rail-to-rail operational amplifier to extract a true mean of two signals. The amplifier includes a first amplifier input stage adapted to operate when a mean of the two signals is near an upper rail voltage. A second amplifier input stage is adapted to operate when the mean of the two signals is near a lower rail voltage. A transitioning circuit is adapted to control how much each of the first and the second amplifier input stages contributes to an input of a high-gain amplifier output stage. An output of the high-gain amplifier output stage is fed back to both the n-type amplifier input stage and the p-type amplifier input stage via a matched buffer stage.
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BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title Rail-to-rail operational amplifier circuits to extract the mean (common mode) voltage of two input signals
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