Capacitance processing circuit and a MEMS device

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United States of America Patent

PATENT NO 9383860
APP PUB NO 20150145589A1
SERIAL NO

14546370

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Abstract

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The claims define a processing circuit for processing input signals from a capacitive transducer structure. A current-to-voltage converter receives two input signals from the capacitive transducer structure, and outputs two output signals to gain stage circuits, and to a reference voltage generator. The gain stages generate from the output voltage signals a differential output signal. The reference voltage generates from the output signals a common mode output signal. The processing circuit generates a digital signal that corresponds to a quotient of the differential output signal and the common mode output signal.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aaltonen, Lasse Espoo, FI 19 159
Salo, Teemu Riihimäki, FI 6 96
Sillanpää, Tero Espoo, FI 3 6

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