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:
Nov. 23, 1999
Filed:
Jun. 30, 1997
James Jason LoCascio, San Jose, CA (US);
Charles Raymond Thurber, Jr, Sunnyvale, CA (US);
Maxim Integrated Products, Inc., Sunnyvale, CA (US);
Abstract
Temperature measurement with interleaved bi-level current on a diode and bi-level current source therefor which provides a very accurate ratio of measurement currents through the diode without calibration and despite process and temperature variations. The bi-level current source uses a plurality N of individual current sources wherein the higher current is comprised of the sum of the N individual current sources and the lower current is comprised of one of the individual current sources, with a temperature measurement being made using N higher current/lower current measuring sequences and using a different one of the N individual current sources for each sequence. Proper selection of the value of N and proper ordering of the two currents in each of the N measuring sequences when the diode temperature is increasing or decreasing will provide an output temperature representing the temperature of the diode at the beginning of the N measurement sequences, at the end of the N measurement sequences, or half way between. Alternate methods of achieving the results of the invention are disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile