US Patent 7212137 Delta sigma modulator with integral decimation

Patent 7212137 was granted and assigned to Cirrus Logic on May, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Cirrus Logic

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

72121370

Patent Inventor Names

John L. Melanson0

Date of Patent

May 1, 2007

Patent Application Number

106825520

Date Filed

October 9, 2003

Patent Primary Examiner

‌

Jean Bruner Jeanglaude

Patent abstract

A digital signal processing system utilizes an internal filter of a delta-sigma modulator in a novel manner to implement both the integration functions of the delta-sigma modulator and a decimation function. Using the internal filter to combine integration and decimation functions can eliminate the need for a separate decimation filter. The combination of integration and decimation functions can also improve signal-to-noise ratio by improving low-pass filtering performance.