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. 30, 2010
Filed:
Oct. 21, 2006
Xijian Lin, Fremont, CA (US);
Phillip J. Benzel, Pleasanton, CA (US);
Xijian Lin, Fremont, CA (US);
Phillip J. Benzel, Pleasanton, CA (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
Methods and systems for producing a digital temperature reading are provided. In an embodiment, one or more current sources and one or more switches are used to selectively provide a first amount of current (I) and a second amount of current (I) to the emitter of a transistor (Q), during different time slots of a time period, to thereby produce a first base-emitter voltage (Vbe) and a second base-emitter voltage (Vbe), where I=I*M, and M is a known constant. An analog-to-digital converter (ADC) digitizes analog signals representative of the magnitudes Vbeand Vbe. A difference is determined between the magnitudes of Vbeand Vbe. A digital calculator produces a digital temperature reading (DTR) based on the difference between the magnitudes of Vbeand Vbe