Capacitance-to-digital modulator with sensor failure-mode detection
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United States of America Patent
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Jun 26, 2007
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app pub date -
Jan 26, 2006
filing date -
Jan 26, 2006
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Abstract
A pressure transmitter having a capacitance-to-digital modulator produces an output as a function of sensor capacitance and a reference capacitance. Transmitter also includes a sensor failure mode detector produces an output signal and identifies failure modes of the sensor capacitance and reference capacitance.
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