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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.:

US 10560054 B1

PDFFull Text
Date of Patent:
Feb. 11, 2020

Filed:

Feb. 28, 2018

Circuit system

Applicant:

Huawei Technologies Co., Ltd., Shenzhen, CN;

Inventors:

Ding Li, Shenzhen, CN;

Shuai Du, Chengdu, CN;

Yixing Chu, Chengdu, CN;

Assignee:

HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Steven J Mottola

Int. Cl.
CPC ...
H03F 3/68 (2006.01); H03F 1/02 (2006.01); H03F 3/45 (2006.01); H03F 1/32 (2006.01);
U.S. Cl.
CPC ...
H03F 1/02 (2013.01); H03F 1/3211 (2013.01); H03F 3/45 (2013.01); H03F 3/45475 (2013.01); H03F 2200/129 (2013.01); H03F 2200/135 (2013.01); H03F 2200/144 (2013.01); H03F 2200/405 (2013.01); H03F 2200/408 (2013.01); H03F 2200/411 (2013.01); H03F 2203/45114 (2013.01); H03F 2203/45116 (2013.01); H03F 2203/45224 (2013.01); H03F 2203/45512 (2013.01); H03F 2203/45526 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45594 (2013.01);
Abstract

A circuit system including an operational amplification circuit is disclosed. The operational amplification circuit includes N stages of operational amplification units that are cascaded, an input terminal of the 1stage of operational amplification unit is an input terminal of the operational amplification circuit, and an output terminal of the Nstage of operational amplification unit is an output terminal of the operational amplification circuit; an output terminal of the istage of operational amplification unit is connected to an input terminal of the (i+1)stage of operational amplification unit, so as to provide an input signal for the (i+1)stage of operational amplification unit; and there is a feedback channel from the output terminal of the Nstage of operational amplification unit to an input terminal of each of the 1stage of operational amplification unit to the Nstage of operational amplification unit.

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