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:
Apr. 10, 2012
Filed:
Apr. 10, 2009
Applicant:
Hideyuki Tajima, Kanagawa, JP;
Inventor:
Hideyuki Tajima, Kanagawa, JP;
Assignee:
Renesas Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/00 (2006.01); G01K 7/16 (2006.01); G01K 7/22 (2006.01); G01K 7/24 (2006.01); G01K 7/25 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a temperature sensor circuit, a temperature sensor is configured to output a first voltage corresponding to temperature. A voltage source is configured to output a second voltage having the same nonlinear dependence on the temperature as a nonlinear dependence of the first voltage on the temperature. An amplifier is configured to amplify the second voltage with a first amplification factor to output a third voltage. An inversion amplifier is configured to perform inversion amplification on a difference between the first voltage and the third voltage with a second amplification factor to output a fourth voltage.