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:
May. 08, 2001
Filed:
Aug. 23, 1999
Applicant:
Inventor:
Amit Gattani, Tinton Falls, NJ (US);
Assignee:
Level One Communications, Inc., Sacramento, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/10 ; H03M 3/00 ;
U.S. Cl.
CPC ...
H03M 1/10 ; H03M 3/00 ;
Abstract
A system and method for calibrating a multi-bit feedback quantizer in a delta-sigma modulation system. A digital data pattern corresponding to a particular DAC code of a multi-bit digital-to-analog converter is transmitted in the transmit channel, where the DAC code is proportional to an analog voltage signal. An effective DC component of the digital data pattern is realized and converted to corresponding digital DC component values. A predetermined number of samples of the digital DC component values are averaged to provide an average sample value. A digital code in the multi-bit feedback quantizer is replaced with the average sample value.