Physical quantity detection circuit, physical quantity detection device, electronic apparatus, and vehicle
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United States of America Patent
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Oct 30, 2018
Grant Date -
Jan 18, 2018
app pub date -
Jul 11, 2017
filing date -
Jul 15, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A physical quantity detection device includes a switched capacitor filter circuit having a first sample-and-hold circuit adapted to sample and hold a first signal, which is based on an output signal of a physical quantity detection element, an amplifier circuit to which an output signal of the first sample-and-hold circuit is input, and a first switched capacitor circuit to which a first output signal of the amplifier circuit is input, wherein an output signal of the first switched capacitor circuit is input to the amplifier circuit, and an A/D conversion circuit adapted to perform an A/D conversion on an output signal of the switched capacitor filter circuit.
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