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:
Sep. 18, 2007
Filed:
Sep. 27, 2005
Chinq-shiun Chiu, Hsin-Chu, TW;
Chih-hsien Shen, Kao-Hsiung, TW;
Shou-tsung Wang, Hsin-Ying, TW;
Chi-kun Chiu, Ping-Cheng, TW;
Chinq-Shiun Chiu, Hsin-Chu, TW;
Chih-Hsien Shen, Kao-Hsiung, TW;
Shou-Tsung Wang, Hsin-Ying, TW;
Chi-Kun Chiu, Ping-Cheng, TW;
Mediatek Inc., Hsin-Chu Hsien, TW;
Abstract
A DC offset calibration device for calibrating a DC offset of an output signal of a gain stage, the DC offset calibration device includes: a digital-to-analog converter (DAC) electrically connected to the gain stage for generating an offset current according to the DC offset of the output signal of the gain stage; and a current-to-current converter electrically connected to the DAC and the gain stage for reducing the signal scale of the offset current to generate a compensation signal so as to reduce the DC offset at the output of the gain stage.