Reference ladder auto-calibration circuit for an analog to digital converter
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United States of America Patent
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Nov 28, 1995
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N/A
app pub date -
May 20, 1994
filing date -
May 20, 1994
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Abstract
An auto-calibrated reference resistor ladder network is disclosed which is suitable for use in a precision analog to digital converter. Resistors in the ladder are connected to an auto-calibration circuit which continually measures the potential developed across each of the connected resistors and adjusts the resistance of the resistor to match the measured potential to a reference potential. In the disclosed circuit, the reference potential is the potential developed across a defined one of the resistors.
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