Methods and apparatuses for slew rate enhancement of amplifiers
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United States of America Patent
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Aug 30, 2016
Grant Date -
Sep 18, 2014
app pub date -
Mar 14, 2014
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
A circuit is disclosed to enhance slew rate of an amplifier. An amplifier includes an output, a first input, and a second input in a differential pair configuration. A slew rate enhancer includes a first slew rate enhancer and a second slew rate enhancer. The first slew direction enhancer is configured to detect a first slew rate condition in a first direction responsive to the first input and the second input and provide additional current for a first side of the differential pair of the amplifier during the first slew rate condition. The second slew direction enhancer is configured to detect a second slew rate condition in a second direction responsive to the first input and the second input and provide additional current for a second side of the differential pair of the amplifier during the second slew rate condition.
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