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:
Apr. 18, 2006
Filed:
Sep. 17, 2004
Andrew T. K. Tang, San Jose, CA (US);
Trey Roessig, Fremont, CA (US);
David Thomson, Fremont, CA (US);
Jonathan Audy, Los Gatos, CA (US);
Andrew T. K. Tang, San Jose, CA (US);
Trey Roessig, Fremont, CA (US);
David Thomson, Fremont, CA (US);
Jonathan Audy, Los Gatos, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A programmable fuse state determination system and method provide a fuse current through a programmed fuse which produces a voltage that varies with the fuse's resistance. The voltage is compared with a threshold voltage to indicate whether the fuse is blown or intact. The invention employs 'normal' and 'test' modes, in which the relationship between the fuse's resistance and the threshold voltage differ, such that a higher fuse resistance is required for the fuse to be determined blown in the ‘test’ mode than in the ‘normal’ mode.