Temperature sensor with digital trim and trimming method thereof
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United States of America Patent
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Nov 1, 2016
Grant Date -
May 30, 2013
app pub date -
Oct 25, 2012
filing date -
Nov 30, 2011
priority date (Note) -
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Abstract
A method for calibrating a temperature sensor comprises: receiving first and second reference voltages from respective first and second tap points within a string of sequentially connected resistive devices of the temperature sensor. Each resistive device has a resistance that varies as a function of temperature. The receiving is performed at two or more known temperatures. A respective code is output corresponding to each respective one of the two or more known temperatures, based on the first and second reference voltages. At least one of the tap points is adjusted, based on the two or more known temperatures and the respective output codes.
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