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:
Oct. 16, 2012
Filed:
Dec. 18, 2008
Oleg Drapkin, Richmond Hill, CA;
Grigori Temkine, Markham, CA;
Kristina AU, Richmond Hill, CA;
Filipp Chekmazov, Toronto, CA;
Paul Edelshteyn, Toronto, CA;
Oleg Drapkin, Richmond Hill, CA;
Grigori Temkine, Markham, CA;
Kristina Au, Richmond Hill, CA;
Filipp Chekmazov, Toronto, CA;
Paul Edelshteyn, Toronto, CA;
ATI Technologies ULC, Markham, Ontario, CA;
Abstract
A method includes generating a first, second and third voltage output from a temperature sensing element of an integrated circuit using a respective, corresponding first, second and third, switched current source, for sequentially switching a respective first, second and third excitation current through the temperature sensing element. The third switched current source generates the corresponding third voltage output as a reference voltage between the first voltage and the second voltage. An error corrected difference is calculated between the first voltage and the second voltage using the reference voltage. In the method, the second excitation current is proportional to the first excitation current by a value n, and the third excitation current is proportional to the first excitation current by the square root of n.