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:
Jul. 22, 2014
Filed:
Mar. 15, 2013
Samsung Electronics Co., Ltd., Suwon-si, KR;
Min-Ho Won, Seoul, KR;
Sang-Hune Park, Seongnam-si, KR;
Abstract
A semiconductor device includes a driver circuit having an output resistance that is controllable responsive to a resistance control signal and a calibration circuit configured to duplicate a resistance behavior of the driver circuit and to generate the resistance control signal responsive to the duplicated resistance behavior. The driver circuit may include a first variable resistor and may be configured to couple an output node to a power supply node via the first variable resistor responsive to an input signal The calibration circuit may include a second variable resistor that is a duplicate of the first variable resistor. The calibration circuit may further include a current source circuit and may be configured to couple the second variable resistor between the power supply node and the current source circuit and to generate the resistance control signal responsive to a voltage of the second variable resistor.