Capacitive sensor interface circuit

The invention discloses a capacitive sensor interface circuit, which comprises an MEMS capacitor driving circuit, a DC stabilizing circuit, a first-level buffer amplifier, a differential difference amplifier and a demodulation circuit. Circuit noises are reduced under the same power consumption cond...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	JIANG ZHENLEI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	The invention discloses a capacitive sensor interface circuit, which comprises an MEMS capacitor driving circuit, a DC stabilizing circuit, a first-level buffer amplifier, a differential difference amplifier and a demodulation circuit. Circuit noises are reduced under the same power consumption conditions through a continuous detection circuit by using the capacitive sensor interface circuit provided by the invention.