Electronic device and method for generating a curvature compensated bandgap reference voltage
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United States of America Patent
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Aug 11, 2015
Grant Date -
Sep 26, 2013
app pub date -
Feb 11, 2011
filing date -
Feb 12, 2010
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Abstract
The invention relates to an electronic device with a bandgap reference generator including a first path with series connection of a first bipolar transistor, a first resistor and a second resistor, and a second path with series connection of a second bipolar transistor and a third resistor. The first and second paths are supplied current via a common node through a fourth resistor controlled by an amplifier sensing voltage drops within the first and second paths. A curvature compensation stage compensates for a variation of base emitter voltage of the bipolar transistors by drawing a compensation current from the common resistor node.
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