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:
May. 13, 2008
Filed:
Nov. 21, 2005
Moshe Gerstenhaber, Newton, MA (US);
Sukhjinder S. Deo, Tewksbury, MA (US);
Roxann Blanchard, Bedford, MA (US);
Moshe Gerstenhaber, Newton, MA (US);
Sukhjinder S. Deo, Tewksbury, MA (US);
Roxann Blanchard, Bedford, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A bias circuit is disclosed for use in a temperature compensation system. The bias circuit provides a current that is proportional to a temperature variation raised to an nth power where |n|>1 in accordance with an embodiment. In further embodiments, the bias circuit includes a PTAT current source for providing to a driver-stage amplifier a current that is substantially proportional to absolute temperature, and a CTAT current source for providing a current that is complementary to absolute temperature, wherein the PTAT and CTAT current sources coact to provide a PTATreference current that is proportional to an absolute temperature variation to the nth power wherein |n|>1.