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. 25, 2000
Filed:
Oct. 15, 1998
Terrance J Dishongh, Hillsboro, OR (US);
David H Pullen, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A circuit that senses changes in the electrical characteristics of a guard ring, and generates one or more signals based, at least in part, on the electrical characteristics that are sensed, is incorporated into an integrated circuit. The one or more signals generated by the circuit are indicative of the reliability of the integrated circuit. In one embodiment of the present invention, a first point of the guard ring is electrically coupled to a voltage supply node by a switchable element such as a MOSFET, and at least two points of the guard ring are electrically coupled respectively to two input terminals of a differential amplifier circuit in such a way that voltage changes across the guard ring can be sensed.