Temperature detection method and device with improved accuracy and conversion time
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United States of America Patent
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Nov 29, 2016
Grant Date -
Nov 14, 2013
app pub date -
May 12, 2012
filing date -
May 12, 2012
priority date (Note) -
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Abstract
Temperature accuracy is improved, conversion gain is increased without increasing current density and parasitic resistance errors and other problems with conventional bandgap reference temperature sensors are eliminated by generating a signal proportional to temperature from four samples, where the signal is defined as a difference between a first difference and a second difference, the first difference comprising a difference between the second sample and the first sample, the second difference comprising a difference between the fourth sample and the third sample, and where the signal is defined to cancel parasitic components in the first, second, third and fourth samples.
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