Patent · US Active

Method and system for charge sensing with variable gain, offset compensation, and demodulation

US7995679B2 · kind B2 · utility

15Cited by

13References

21Claims

0Family size

Assignee

Broadcom Corporation · US

Inventors

Sumant Ranganathan · Sunnyvale, US
Tom W. Kwan · Santa Clara, US
Hung-Sung Li · Sunnyvale, US

Key dates

Filing date	Apr 27, 2005
Grant date	Aug 9, 2011
Priority date	—
Expiry date	Jul 25, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01P15/125
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Provided are a method and system for digitizing a sensor model output signal. The system includes a filter, a demodulator coupled to the filter, a DC offset cancellation mechanism coupled to the demodulator, and an analog to digital converter (ADC). The ADC is directly coupled to the demodulator and the DC offset cancellation mechanism.

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