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:
Jun. 30, 2020
Filed:
Jun. 25, 2019
Global Unichip Corporation, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Ting-Hao Wang, Hsinchu, TW;
Yu-Chu Chen, Hsinchu, TW;
GLOBAL UNICHIP CORPORATION, Hsinchu, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Abstract
A calibration method applicable for a SAR ADC comprising a capacitor array, comprises the following operations: Inputting an input signal to the SAR ADC, wherein the SAR ADC is configured to generate an output signal according to the input signal, and the output signal comprises multiple selected digital codes; calculating average code densities for multiple digital code groups, respectively, wherein the multiple digital code groups are determined by dividing the multiple selected digital codes, and each of the multiple digital code groups comprises one or more selected digital codes of the multiple selected digital codes; calibrating capacitance of a first under-correction capacitor element of the capacitor array according to the first comparison result.