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:
Sep. 16, 2014
Filed:
Sep. 07, 2012
Andre Gunther, Sunnyvale, CA (US);
Kevin Mahooti, Sunnyvale, CA (US);
Andre Gunther, Sunnyvale, CA (US);
Kevin Mahooti, Sunnyvale, CA (US);
NXP B.V., Eindhoven, NL;
Abstract
A method for generating a reference voltage includes generating a proportional-to-absolute temperature (PTAT) voltage across a first pseudo resistor. The first pseudo resistor includes a transistor. The method also includes converting the PTAT voltage to a current based on a resistance of the first pseudo resistor. The method also includes mirroring the current using a current mirror circuit and converting the mirrored current to a converted PTAT voltage using a second pseudo resistor. The second pseudo resistor includes a transistor. The first pseudo resistor and the second pseudo resistor include equal transistor types. The method also includes generating a complementary-to-absolute temperature (CTAT) voltage, and summing the converted PTAT voltage and the CTAT voltage to produce the reference voltage. The resulting reference voltage is temperature independent.