Temperature sensor
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United States of America Patent
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-
Dec 25, 2007
Grant Date -
Jan 11, 2007
app pub date -
Jun 23, 2005
filing date -
Jun 23, 2005
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A temperature sensor, which comprises a temperature-dependent element, a comparator unit, first/second capacitors and first/second switching capacitors, is provided. The temperature-dependent element has an input terminal selectively coupled to one of a first current source and a second current source, and has an output terminal. The comparator unit comprises a comparator and first/second feedback capacitors. One end of the first switching capacitor is coupled to the first comparator input terminal, and another end of the first switching capacitor is selectively coupled to one of two different voltages. One end of the second switching capacitor is coupled to the second comparator input terminal, and another end of the second switching capacitor is selectively coupled to one of two different voltages.
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