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:
Aug. 06, 2013
Filed:
Dec. 27, 2011
Hung-i Chen, Hsinchu County, TW;
Chang-yu Chen, Kaohsiung, TW;
Xuan-lun Huang, Changhua County, TW;
Jiun-lang Huang, Taipei, TW;
Hung-I Chen, Hsinchu County, TW;
Chang-Yu Chen, Kaohsiung, TW;
Xuan-Lun Huang, Changhua County, TW;
Jiun-Lang Huang, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method and an apparatus for evaluating weighting of elements of a DAC and a SAR ADC using the same are provided. An equivalent weighting of each composed element is obtained by adding a reference element with a reference weighting, an auxiliary DAC, and a search circuit into the SAR ADC, and the equivalent weighting is represented by the reference weighting. The SAR ADC can calculate and then obtain a correct digital output by using the calibrated equivalent weighting and the successive approximation result of each input signal. The present disclosure prevents the necessity of matching each composed element of the DAC in the SAR ADC.