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.:
Date of Patent:
Jun. 02, 2020
Filed:
Aug. 29, 2017
Applicant:
Novatek Microelectronics Corp., Hsin-Chu, TW;
Inventors:
Jhih-Siou Cheng, New Taipei, TW;
Tzong-Honge Shieh, Hsinchu County, TW;
Assignee:
NOVATEK Microelectronics Corp., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/18 (2006.01); H03F 3/26 (2006.01); H03F 3/21 (2006.01); H03F 3/30 (2006.01); G09G 3/36 (2006.01); H03F 3/72 (2006.01); H03F 3/68 (2006.01);
U.S. Cl.
CPC ...
H03F 3/26 (2013.01); G09G 3/3688 (2013.01); H03F 3/211 (2013.01); H03F 3/3022 (2013.01); H03F 3/68 (2013.01); H03F 3/72 (2013.01); G09G 3/3696 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0291 (2013.01); H03F 3/3001 (2013.01);
Abstract
An operational amplifier includes an output node; an output stage, comprising a plurality of output current paths and a plurality of control nodes, wherein the plurality of control nodes are respectively coupled to the plurality of output current paths, and the plurality of output current paths are coupled to the output node and respectively coupled to a plurality of power supply sources providing different voltages; and a selecting unit, configured to couple an internal output node of the operational amplifier to one of the plurality of control nodes of the output stage.