Patent · US Active

Electro-mechanical oscillator and common-mode detection circuit

US9157945B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Assignee

Freeescale Semiconductor, Inc. · US

Inventors

Keith L. Kraver · Gilbert, US
Deyou Fang · Frisco, US
Mark E. Schlarmann · Chandler, US

Key dates

Filing date	Aug 29, 2013
Grant date	Oct 13, 2015
Priority date	—
Expiry date	Jun 14, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH03B5/30
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A multi-mass resonator and a common-mode detection circuit are provided. The common-mode detection circuit, for example, may include a plurality of sensing electrodes, an interface circuit configured to interface with the plurality of sensing electrodes, and a common-mode capacitance extractor circuit electrically coupled in parallel to the interface circuit and configured to detect common-mode capacitance between the plurality of sensing electrodes and output a voltage representative the detected common-mode capacitance, and a differential-mode capacitance extractor circuit electrically coupled in parallel to the interface circuit and configured to detect differential-mode capacitance between the plurality of sensing electrodes and output a voltage representative the detected differential-mode capacitance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.