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. 13, 2001
Filed:
Jul. 24, 2000
Guoqing Miao, Roselle Park, NJ (US);
Cary L. Delano, San Jose, CA (US);
Tripath Technology, Inc., Santa Clara, CA (US);
Abstract
An offset voltage calibration circuit for use with a digital switching amplifier. The calibration circuit includes an analog-to-digital converter for converting at least one DC offset voltage associated with the digital switching amplifier to digital offset data. A memory stores the digital offset data. Control circuitry controls the analog-to-digital converter. A digital-to-analog converter coupled to the memory receives the digital offset data and generates an offset compensation voltage for applying to an input port of the digital switching amplifier which thereby cancels at least a portion of the at least one DC offset voltage.