The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2007
Filed:
Aug. 25, 2006
Gunnar Gangstoe, Trondheim, NO;
Arne Aas, Trondheim, NO;
Gunnar Gangstoe, Trondheim, NO;
Arne Aas, Trondheim, NO;
ATMEL Corporation, San Jose, CA (US);
Abstract
A current sensing analog to digital converter (CS-ADC) is disclosed. The current sensing analog to digital converter comprises a modulator adapted to sense a change in current and generate an oversampled signal. The converter further includes a decimation filter system coupled to modulator for removing out of band noise from the signal and reduce the data rate to achieve a high resolution signal. A current sensing analog to digital converter (CS-ADC) is disclosed that samples the charge or discharge current flowing through an external sense resistor R. The sample from the Ris processed by a delta-sigma modulator which generates an over sampled noise shaped signal. From this signal a decimation filter system removes the out-of band noise and reduces the data rate to achieve a high-resolution signal. The CS-ADC also provides regular current detection. The regular current detection compares the data from conversion against charge/discharge threshold levels specified by the user. To save power a special mode where the user configures the regular current sampling interval is provided. This allows ultra-low power operation in power-save mode when small charge or discharge currents are flowing.