Rail-to-rail charge pump with replica circuitry
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United States of America Patent
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Oct 17, 2006
Grant Date -
Mar 16, 2006
app pub date -
Sep 14, 2004
filing date -
Sep 14, 2004
priority date (Note) -
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Abstract
The charge pump circuit includes: a charge pump output branch having a first transistor and a second transistor coupled in series; an output branch replica having a third transistor and a fourth transistor coupled in series; a feedback circuit coupled between the output branch and the output branch replica; a charge pump input circuit coupled to the charge pump output branch, and having first and second input branches; and an input circuit branch replica controlled by the feedback circuit and coupled to the charge pump input circuit.
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