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:
Jun. 12, 2007
Filed:
Oct. 11, 2005
Eric Scheuerlein, Los Gatos, CA (US);
Mehmet Aslan, Sunnyvale, CA (US);
Eric Scheuerlein, Los Gatos, CA (US);
Mehmet Aslan, Sunnyvale, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A circuit for creating a current complementary to absolute temperature comprises a first transistor and a second transistor. A resistor for generating a current complementary to absolute temperature has a first node coupled to the emitter of the first transistor and a second node coupled to the base of the first transistor. A first current mirror is coupled between the second node of the resistor and the emitter of the second transistor, the second transistor being used for replicating bias conditions of the first transistor. A second current mirror is coupled between the base of the first transistor and the base of the second transistor, and the second current mirror is used for canceling a base current of the first transistor.