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:
Aug. 19, 2008
Filed:
Jun. 06, 2006
Youn Joong Lee, Seoul, KR;
Won Tae Choi, Yongin, KR;
Chan Woo Park, Ansan, KR;
Byung Hoon Kim, Seoul, KR;
Youn Joong Lee, Seoul, KR;
Won Tae Choi, Yongin, KR;
Chan Woo Park, Ansan, KR;
Byung Hoon Kim, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, Gyunggi-do, KR;
Abstract
An output buffer circuit includes an input stage of which one end receives an input voltage and the other end receives an output voltage; a class AB output stage that increases a current flowing in the output stage when the difference between the input and output voltages is larger than 0; a floating current source that biases the class AB output stage; a summing circuit that is connected to the input stage, the floating current source, and the class AB output stage so as to sum up the current supplied from the input stage and the internal current supplied from the floating current source; and an offset compensating circuit that is connected to the input stage and is composed of a plurality of switching elements and resistors so as to detect an offset voltage to compensate.