APPARATUS, SYSTEM, AND METHOD FOR TRIMMING ANALOG TEMPERATURE SENSORS
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United States of America
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Dec 23, 2021
app pub date -
Jun 18, 2020
filing date -
Jun 18, 2020
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Abstract
A method for trimming analog temperature sensors. First, raise a temperature of a temperature sensor to a highest temperature of a qualification temperature range. Then, trim the temperature sensor such that a high temperature code generated by the temperature sensor represents an actual temperature reported by the temperature sensor at the highest temperature. Next, lower the temperature of the temperature sensor to a lowest temperature of the qualification temperature range. Determine a slope error between the high temperature code and a low temperature code generated by the temperature sensor at the lowest temperature. Finally, determine a correction function that compensates for the slope error of measured temperature codes generated by the temperature sensor for temperatures across the qualification temperature range.
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