公开(公告)号：US10305501B2

公开(公告)日：2019-05-28

申请号：US15460219

申请日：2017-03-15

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Hua Fan ,  Hadi Heidari ,  Franco Maloberti ,  Dagang Li ,  Daqian Hu ,  Yuanjun Cen

IPC: H03M1/00 ,  H03M1/10 ,  H03M1/38

Abstract: A method for improving a spurious free dynamic range and a signal-to-noise-and-distortion ratio of a capacitor-resistor combined successive approximation register analog-to-digital converter by capacitor re-configuration, the method including: 1) arranging 128 unit capacitors in a positive array and a negative array, respectively, dividing unit capacitors of symmetrical positions of the positive array and the negative array into groups to yield a total of 128 groups of capacitors; 2) acquiring 128 digital codes corresponding to 128 groups of capacitors; 3) sorting the 128 groups of capacitors from maximum to minimum according to the 128 digital codes obtained in 2), and recording the 128 groups of capacitors after sorting as C1-C128; and 4) selecting 64 groups of capacitors from C33 to C96, and reconfiguring the 64 groups of capacitors in capacitor arrays of the capacitor-resistor analog-to-digital converter.

公开(公告)号：US10298254B1

公开(公告)日：2019-05-21

申请号：US16114300

申请日：2018-08-28

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Hua Fan ,  Jingxuan Yang ,  Quanyuan Feng ,  Dagang Li ,  Daqian Hu ,  Yuanjun Cen ,  Hadi Heidari ,  Franco Maloberti ,  Jingtao Li ,  Huaying Su

IPC: H03M1/46

Abstract: A method of arranging a capacitor array of a successive approximation register analog-to-digital converter in a successive approximation process, the method including: splitting a binary capacitor array into unit capacitors, then sorting, grouping, and rotating the original binary capacitive array involved in successive approximation conversion.