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:
Feb. 22, 2011
Filed:
Dec. 31, 2008
Fang-shi Jordan Lai, Chia Yi, TW;
Kuo-ming Wang, Hsin-Chu, TW;
Hsu-feng Hsueh, Tainan, TW;
Cheng Yen Weng, Hsin-Chu, TW;
Yung-fu Lin, Hsin-Chu, TW;
Fang-Shi Jordan Lai, Chia Yi, TW;
Kuo-Ming Wang, Hsin-Chu, TW;
Hsu-Feng Hsueh, Tainan, TW;
Cheng Yen Weng, Hsin-Chu, TW;
Yung-Fu Lin, Hsin-Chu, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Abstract
A method of calibrating a digital-to-analog converter (DAC) is provided. The DAC includes a least-significant bit (LSB) block, and dummy LSB block adjacent to the LSB block. The DAC has a most-significant bit (MSB) block, which includes MSB thermometer macros. The method includes measuring the dummy LSB block to obtain a dummy LSB sum; and calibrating the MSB block so that each of the MSB thermometer macros provides a substantially same current as the dummy LSB sum.