Fast response current source
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United States of America Patent
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Oct 6, 2015
Grant Date -
Dec 20, 2012
app pub date -
May 14, 2012
filing date -
Jun 14, 2011
priority date (Note) -
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Abstract
A fast response current source capable of providing an output current is disclosed. The fast response current source includes a constant current generating block, a first feedback capacitor, a first current buffer and a first output current generating block. The constant current generating block provides a first constant current. The first current buffer generates a first buffering current to flow through the first feedback terminal, and changes a current value of the first buffering current in response to the current variation at the first feedback terminal when the voltage at the output terminal is varied. The first output current generating block generates a first output current to flow through the output terminal, and changes a current value of the first output current in response to the variation of the first buffering current when the voltage at the output terminal is varied.
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