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:
Jan. 16, 2018

Filed:

May. 14, 2015
Applicant:

Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;

Inventors:

Jong-Woo Lee, Seoul, KR;

Byung-Hak Cho, Seongnam-si, KR;

Jae-Hyun Lim, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 3/183 (2006.01); H03G 3/30 (2006.01);
U.S. Cl.
CPC ...
H03F 3/183 (2013.01); H03F 3/45183 (2013.01); H03F 3/45475 (2013.01); H03G 3/3005 (2013.01); H03F 2200/21 (2013.01); H03F 2200/555 (2013.01); H03F 2203/45522 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45591 (2013.01); H03F 2203/45594 (2013.01); H03F 2203/45686 (2013.01); H03F 2203/45702 (2013.01);
Abstract

An analog amplifier is provided. The analog variable amplifier includes a first amplifier stage configured to amplify a bias current to output a first output voltage and a second output voltage that respectively depend on a magnitude of a first input voltage and a second input voltage, a second amplifier stage configured to receive the first output voltage and the second output voltage of the first amplifier stage as inputs and to amplify the received first output voltage and the second output voltage, and at least one auxiliary bias current source coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the first output voltage, and coupled to an electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the second output voltage.


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