Systems and methods for trimming bandgap offset with bipolar elements
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United States of America Patent
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Sep 20, 2011
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N/A
app pub date -
Nov 5, 2009
filing date -
Nov 18, 2008
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Abstract
An integrated circuit has an untrimmed bandgap generation circuit; and a bandgap generation circuit coupled to the untrimmed bandgap generation circuit. The bandgap generation circuit has a current source controlled by the untrimmed bandgap generation circuit and coupled in series with a resistor and a first bipolar diode device, one or more of bipolar diode devices, each bipolar diode device coupled in parallel with the first bipolar diode device, wherein a trimmed bandgap reference voltage output of the integrated circuit is a function of the number of bipolar diode devices.
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