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:
May. 04, 2004
Filed:
Jun. 28, 2001
Dar-Chang Juang, Hsinchu, TW;
Sunplus Technology Co., Ltd., Hsin-Chu, TW;
Abstract
A source drive amplifier has a first input circuit controlled by a polarity switching signal for being switched into an NMOS differential amplifying circuit or a bias circuit, and a second input circuit controlled by a polarity switching signal for being switched into a bias circuit or a PMOS differential amplifying circuit. The output of the first input circuit switched into an NMOS differential amplifying circuit drives the PMOS transistor of an output transistor pair for being used as a source out amplifying output stage, and a current provided by the NMOS transistor is used as a bias. The output of the second output circuit switched into a PMOS differential amplifying circuit drives the NMOS transistor of the output transistor pair for being used as a sink in amplifying output stage, and a current provided by the PMOS transistor is used as a bias.