公开(公告)号：US20240243731A1

公开(公告)日：2024-07-18

申请号：US18559562

申请日：2022-11-08

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Zhijian CHEN ,  Bin LI ,  Guangyin FENG ,  Shan GAO ,  Zhaohui WU

IPC: H03H11/04 ,  H03F3/45 ,  H03H11/12

CPC classification number: H03H11/0472 ,  H03F3/45475 ,  H03H11/1204 ,  H03F2200/261 ,  H03F2200/375

Abstract: A calibration method and a tuning method for an on-chip differential active RC filter are provided. The calibration method comprises: obtaining zero-crossing time of a differential signal outputted by a single-pole point real number filter by analyzing the single-pole point real number filter; setting a reference clock period according to the relationship between the zero-crossing time and the bandwidth of the single-pole point real number filter, and setting a calibration working time sequence according to the reference clock period; and scanning an RC configuration of an RC array according to the calibration working time sequence to realize calibration of the RC array.