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Patent Searching and Data


Title:
OFFSET VOLTAGE SELF-CORRECTING CIRCUIT FOR COMPARATOR
Document Type and Number:
WIPO Patent Application WO/2017/219377
Kind Code:
A1
Abstract:
Provided in the present invention is an offset voltage self-correcting circuit for a comparator. Because offset voltage of a comparator is caused by parameter randomness in the semiconductor process, the offset voltage of the comparator also has randomness. Due to the randomness of the offset voltage of the comparator, reference voltage of a parallel comparator in a parallel conversion type analog-to-digital converter has uncertainty. Under a condition that the offset voltage of the comparator is serious, it is possible that the parallel conversion type analog-to-digital converter may even have a functional error. By means of the offset voltage self-correcting circuit for the comparator provided by the invention, the random offset voltage of the comparator can be corrected until the random offset voltage satisfies requirements. Therefore, by means of the circuit and the method in the invention, the influence of the random offset of the comparator on the function and performance of the parallel conversion type analog-to-digital converter can be eliminated, greatly improving the speed and performance of analog-to-digital converters, in particular, the parallel conversion type analog-to-digital converter.

Inventors:
HU RONGBIN (CN)
WANG YONGLU (CN)
HU GANGYI (CN)
JIANG HEQUAN (CN)
ZHANG ZHENGPING (CN)
CHEN GUANGBING (CN)
FU DONGBING (CN)
WANG YUXIN (CN)
ZHANG LEI (CN)
YE RONGKE (CN)
ZHU CAN (CN)
GAO YUHAN (CN)
Application Number:
PCT/CN2016/087206
Publication Date:
December 28, 2017
Filing Date:
June 27, 2016
Export Citation:
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Assignee:
CHINA ELECTRONIC TECH CORPORATION 24TH RESEARCH INSTITUTE (CN)
International Classes:
H03M1/36; H03M1/10
Foreign References:
CN105049043A2015-11-11
CN105049051A2015-11-11
CN101217263A2008-07-09
CN203377849U2014-01-01
JPH118557A1999-01-12
Attorney, Agent or Firm:
BEIJING YIGE INTELLECTUAL PROPERTY AGENT LTD (GENERAL PARTNERSHIP) (CN)
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