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. 04, 2020
Filed:
Jun. 27, 2016
China Electronic Technology Corporation, 24th Research Institute, Chongqing, CN;
Rong-Bin Hu, Chongqing, CN;
Yong-Lu Wang, Chongqing, CN;
Gang-Yi Hu, Chongqing, CN;
He-Quan Jiang, Chongqing, CN;
Zheng-Ping Zhang, Chongqing, CN;
Guang-Bing Chen, Chongqing, CN;
Dong-Bing Fu, Chongqing, CN;
Yu-Xin Wang, Chongqing, CN;
Lei Zhang, Chongqing, CN;
Rong-Ke Ye, Chongqing, CN;
Can Zhu, Chongqing, CN;
Yu-Han Gao, Chongqing, CN;
CHINA ELECTRONIC TECHNOLOGY CORPORATION, 24TH RESEARCH INSTITUTE, Chongqing, CN;
Abstract
A comparator offset voltage self-correction circuit is disclosed. A comparator offset voltage which is caused by the semiconductor process parameter randomness also has randomness. Due to the randomness of the comparator offset voltage, a reference voltage of a parallel comparator in a parallel-conversion-type analog-to-digital converter is uncertain. If the comparator offset voltage is large, the parallel-conversion-type analog-to-digital converter may even have a functional error. The comparator offset voltage self-correction circuit provided in the present invention can correct a random offset voltage of a comparator to meet requirements. Therefore, by means of the circuit and a method provided in the present invention, adverse influence of the random offset of the comparator on the function and the performance of the parallel-conversion-type analog-to-digital converter is eliminated, thereby greatly improving the speed and the performance of the analog-to-digital converter, in particular the parallel-conversion-type analog-to-digital converter.