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. 23, 2010
Filed:
Apr. 08, 2008
Applicant:
Ki-ho Kim, Kyoungki-do, KR;
Inventor:
Ki-Ho Kim, Kyoungki-do, KR;
Assignee:
Hybix Semiconductor, Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01); H03K 19/003 (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 and a reference voltage, to generate calibration codes. The calibration unit also includes a calibration resistor unit having parallel resistors which are turned on/off in response to each of the calibration codes and connected to the calibration node, a turn-on strength of at least one of the parallel resistors being controlled by a control signal.