Multiple resolution temperature sensor
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United States of America Patent
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Jul 11, 2017
Grant Date -
N/A
app pub date -
Jun 9, 2016
filing date -
Jun 9, 2016
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Abstract
A sensor that can provide multiple resolutions, based on the output of the same analog-to-digital converter is disclosed. Some applications require a fast measurement of a physical parameter (e.g., temperature, voltage, pressure), but can tolerate a lower resolution measurement. Other applications require a higher resolution measurement, but can tolerate a slower measurement. The sensor may comprise a sigma delta modulator (SDM) ADC that outputs a digital reading. The output may comprise a bus having a width that is equal to the desired highest resolution of the digital code for the physical parameter. The sensor may further comprise a storage unit for each desired level of resolution. The sensor may further comprise logic that causes the storage units to sample the output bus after a certain number of clock cycles in order to store a digital code having a number of bits equal to the resolution.
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