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:
Feb. 12, 2002
Filed:
Jun. 29, 2000
Daniel Shkap, Cambridge, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multipurpose current source for generating a current with linear positive temperature dependence at a predetermined slope. This multipurpose current source includes a proportional to absolute temperature (PTAT) current source, a constant current generation circuit coupled to the PTAT current source circuit and a circuit coupled to the PTAT current source circuit and the constant current generation circuit by which a temperature dependent current developed by the PTAT current source and a constant current independent of temperature developed by the constant current generation circuit are combined The linear positive temperature dependent current is generated by subtracting to develop a temperature dependent current by reducing the temperature dependent current developed by the PTAT current source by the constant current independent of temperature developed by the constant current generation circuit.