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:
Apr. 29, 2003
Filed:
Mar. 14, 2001
Samsung Electronics, Co., Ltd., Suwon, KR;
Abstract
An output driver supplying constant output current regardless of output voltage changes. The output driver includes a current source for regulating changes in a voltage of an output terminal responsive to a reference signal, and an output current compensator that responds to the current source to supply constant current to the terminal. The current source includes a first MOS transistor having a drain coupled to the terminal and a gate to which the reference signal is input, and a second MOS transistor having a drain coupled to a source of the first MOS transistor, a gate to which data is input, and a source coupled to ground. The current source may be an open drain current source. The output current compensator includes a current compensator coupled to the terminal, and a sensing driver for sensing voltage changes of the terminal and driving the current compensator.