System and method for process and temperature calibration of capacitor-based oscillators
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United States of America Patent
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Jul 19, 2016
Grant Date -
Nov 26, 2015
app pub date -
Apr 6, 2015
filing date -
May 23, 2014
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Abstract
A method and device for calibrating an oscillator and a temperature sensor in an electronic device are provided. A same temperature cycle, which includes at least two distinct temperatures, may be used to obtain data to calibrate both the oscillator and the temperature sensor. One of the distinct temperatures may comprise an ambient temperature, and a second distinct temperature may comprise a heated temperature greater than the ambient temperature. The electronic device (or a calibration device separate from the electronic device) may receive the readings from the oscillator and the temperature sensor at the two distinct temperatures in the same temperature cycle, and may determine an oscillator correction factor and a temperature sensor correction factor.
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