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:
Aug. 20, 2019
Filed:
Nov. 28, 2016
Applicant:
Nxp Usa, Inc., Austin, TX (US);
Inventors:
Firas N. Abughazaleh, Austin, TX (US);
Venkata Rama Mohan Reddy Mooraka, Austin, TX (US);
Assignee:
NXP USA, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01K 7/00 (2006.01); G01K 7/16 (2006.01); G01K 7/01 (2006.01); G06F 11/30 (2006.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01K 7/16 (2013.01); G01K 7/01 (2013.01); G06F 11/3058 (2013.01); G01R 31/2874 (2013.01);
Abstract
An on-chip temperature sensor generates a proportional to absolute temperature current and sloped bandgap reference current with transistor offset cancelled using chopping circuitry and dynamic element matching circuitry with resistor-based current mirrors. A digital successive approximation register (SAR) code provided to a digital to analog converter (DAC) is adjusted until current output by the DAC matches the PTAT current.