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. 21, 2017
China Electronic Technology Corporation, 24th Research Institute, Chongqing, CN;
Rongbin Hu, Chongqing, CN;
Yonglu Wang, Chongqing, CN;
Zhengping Zhang, Chongqing, CN;
Jian'an Wang, Chongqing, CN;
Guangbing Chen, Chongqing, CN;
Dongbing Fu, Chongqing, CN;
Yuxin Wang, Chongqing, CN;
Hequan Jiang, Chongqing, CN;
Gangyi Hu, Chongqing, CN;
CHINA ELECTRONIC TECHNOLOGY CORPORATION, 24TH RESEARCH INSTITUTE, Chongqing, CN;
Abstract
Disclosed is a successive approximation algorithm-based ADC self-correcting circuit, comprising: a coding circuit, a voltage dividing resistor string, a comparator array, a multi-path selection switch, a first digital-to-analog converter, a reference circuit, a control register, and a data register; an input end of the coding circuit is connected to an output end of the comparator array; a positive-phase input end of each comparator in the comparator array is connected to a mobile end of the multi-path selection switch; a negative-phase input end of each comparator in the comparator array is correspondingly connected between each two neighboring resistors in the voltage dividing resistor string; an enabling end of the comparator array is connected to the control register; a first immobile end of the multi-path selection switch is used for receiving an analog signal, a second immobile send is connected to an output end of the first digital-to-analog converter, and a control end is connected to the control register; the reference circuit is connected to the voltage dividing resistor string and the comparator array for use to correct an intermediate level and voltage range of the voltage dividing resistor string to be consistent with that of the output of the first digital-to-analog converter.