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:
Sep. 24, 2019

Filed:

Oct. 12, 2018
Applicant:

Realtek Semiconductor Corp., Hsinchu, TW;

Inventors:

Shih-Hsiung Huang, Miaoli County, TW;

Chih-Lung Chen, Hsinchu County, TW;

Jie-Fan Lai, Hsinchu, TW;

Chien-Ming Wu, Hsinchu County, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/44 (2006.01); G11C 27/02 (2006.01); H03M 1/06 (2006.01); H03M 1/16 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H03M 1/442 (2013.01); G11C 27/02 (2013.01); H03M 1/0695 (2013.01); H03M 1/164 (2013.01); H03M 1/1245 (2013.01);
Abstract

A sample-and-hold amplifier includes: a switched capacitor network for conducting a sample-and-hold operation on an input signal to generate a first signal; and an operational amplifier coupled with the switched capacitor network and including multiple candidate capacitors; wherein the operational amplifier is arranged to operably generate an output signal based on the first signal, and to operably switch coupling relationship of the multiple candidate capacitors based on the magnitude of the input signal, so that only a portion of the multiple candidate capacitors could be participated in the generation of the output signal at a time.


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