Detection circuit with dummy integrator to compensate for switch charge insection and amplifier offset voltage

A detection circuit for sensing small capacitive changes has been provided. The detection circuit includes a dummy integrator stage that compensates for a voltage step that results from charge injection due to an existing switch in a first integrator stage. As a result, the detection circuit is inse...

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Bibliographische Detailangaben
Hauptverfasser:	BENNETT, PAUL T, MIETUS, DAVID F
Format:	Patent
Sprache:	eng
Schlagworte:	INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A detection circuit for sensing small capacitive changes has been provided. The detection circuit includes a dummy integrator stage that compensates for a voltage step that results from charge injection due to an existing switch in a first integrator stage. As a result, the detection circuit is insensitive to switch injection and amplifier offset voltages.