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:
Mar. 22, 2011
Filed:
Mar. 25, 2008
Applicants:
Ki-ho Kim, Kyoungki-do, KR;
Sang-jin Byeon, Kyoungki-do, KR;
Inventors:
Ki-Ho Kim, Kyoungki-do, KR;
Sang-Jin Byeon, Kyoungki-do, KR;
Assignee:
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A calibration circuit of an on-die termination device includes a code generating unit configured to receive a voltage of a calibration node connected to an external resistor and a reference voltage to generate pull-up calibration codes. The calibration circuit also includes a pull-up calibration resistor unit configured to pull up the calibration node in response to the pull-up calibration codes. The pull-up calibration resistor unit is calibrated such that its resistance becomes higher as a power supply voltage increases.