Linear temperature sensor
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United States of America Patent
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Feb 5, 2002
Grant Date -
N/A
app pub date -
Jul 30, 1999
filing date -
Dec 21, 1998
priority date (Note) -
Expired
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Abstract
A linear temperature sensor that incorporates passive bipolar semiconductor devices and is capable of high accuracy over a very wide temperature range. The passive bipolar semiconductor device splits a voltage drop between the bipolar semiconductor and a resistor, such that the voltage drop varies approximately linearly in negative dependence on temperature. Optionally the linearity may be improved by providing sufficient current to produce a self-heating effect which compensates for non-linear deviations in performance at low temperatures.
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