Auto-averaging RC time constant calibration
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jun 4, 2009
app pub date -
Dec 3, 2007
filing date -
Dec 3, 2007
priority date (Note) -
In Force
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Abstract
This disclosure relates to auto-averaging RC time constant calibration are described. An auto-averaging calibration circuit includes two capacitor branches, where capacitors in the capacitor branches, charge and discharge alternately to accommodate multiple charging cycles in one measurement cycle for measuring a RC time constant. A value of RC time constant is obtained in each charging cycle. A final value of the RC time constant can be determined by averaging various values of the time constants obtained during each charging cycle.
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