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:
Sep. 10, 2013
Filed:
Jun. 21, 2010
Ting LI, Nan'an District, CN;
Yuxin Wang, Nan'an District, CN;
Xiaofeng Shen, Nan'an District, CH;
Shutao Zhou, Nan'an District, CN;
Tao Liu, Nan'an District, CN;
Mingyuan Xu, Nan'an District, CN;
Ruzhang LI, Nan'an District, CN;
Kaiquan He, Nan'an District, CN;
Ting Li, Nan'an District, CN;
Yuxin Wang, Nan'an District, CN;
Xiaofeng Shen, Nan'an District, CH;
Shutao Zhou, Nan'an District, CN;
Tao Liu, Nan'an District, CN;
Mingyuan Xu, Nan'an District, CN;
Ruzhang Li, Nan'an District, CN;
Kaiquan He, Nan'an District, CN;
Abstract
A pipeline A/D converter and its single redundancy bit digital correction are provided. The single redundancy bit digital correction includes the following steps: substages except for the last one quantizes input voltage, calculates the residual voltage, which is amplified and shifted to the middle part of the reference voltage range, and outputs to the following substage until the last one, which only quantizes the input voltage; the code and offset code of each substage corresponding to the quantized thermometer code are calculated; the offset codes of all stages are added by weight to get total offset code; and codes of all substages are added by weight, to which the total offset code is added. The comparator offset error is corrected to obtain an output code which identifies the negative or positive overflow of input signals. The A/D converter adopting the above digital correction is provided.