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:
Oct. 13, 2020
Filed:
Nov. 07, 2019
Ncku Research and Development Foundation, Tainan, TW;
Himax Technologies Limited, Tainan, TW;
Soon-Jyh Chang, Tainan, TW;
Hao-Sheng Wu, Tainan, TW;
NCKU Research and Development Foundation, Tainan, TW;
Himax Technologies Limited, Tainan, TW;
Abstract
A reference ripple suppression circuit adaptable to a successive approximation register (SAR) analog-to-digital converter (ADC) includes a plurality of code-dependent compensation cells, each including a logic circuit and a compensation capacitor. A first plate of the compensation capacitor is coupled to receive a reference voltage to be compensated, and a second plate of the compensation capacitor is coupled to receive an output of the logic circuit performing on an output code of the SAR ADC and at least one logic value representing a bottom-plate voltage of a switched digital-to-analog converter (DAC) of the SAR ADC. (k−1) of the code-dependent compensation cells are required maximally for k-th switching of the SAR ADC.