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.

Date of Patent:
Oct. 12, 2021

Filed:

Nov. 13, 2020
Applicant:

Realtek Semiconductor Corporation, Hsinchu, TW;

Inventors:

Wei-Chou Wang, Hsinchu, TW;

Chih-Chien Chang, Hsinchu, TW;

Shih-Hsiung Huang, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/44 (2006.01); H03M 1/46 (2006.01); H03K 17/13 (2006.01); H03H 19/00 (2006.01);
U.S. Cl.
CPC ...
H03M 1/442 (2013.01); H03H 19/004 (2013.01); H03K 17/13 (2013.01); H03M 1/462 (2013.01);
Abstract

A multi-stage switched capacitor circuit and an operation method thereof are provided. The multi-stage switched capacitor circuit includes a first operational stage, a second operational stage and a third operational stage that are serially connected in order. Each operational stage operates in a sample phase or a hold phase and generates a detection signal indicating an end of the hold phase. The operation method of the multi-stage switched capacitor circuit includes: controlling the second operational stage to operate in the hold phase when the detection signal of the first operational stage indicates the end of the hold phase of the first operational stage, and the detection signal of the third operational stage indicates the end of the hold phase of the third operational stage.


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