APPARATUS AND METHODS FOR A DIFFERENCE AMPLIFIER
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United States of America Patent
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Sep 13, 2016
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Sep 13, 2016
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Abstract
Apparatus and methods for a difference amplifier are provided. In certain examples, the difference amplifier can provide high common mode rejection without differential signal attenuation. In an example, a difference amplifier circuit can include first and second amplifiers, first and second buffer amplifiers, a first feedback voltage divider coupled between an output of the first buffer amplifier and an output of the second amplifier, and a second feedback voltage divider coupled between an output of the second buffer amplifier and an output of the first amplifier.
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