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:
Jul. 10, 2012
Filed:
Oct. 22, 2007
Vijay Kumar Srinivasa Raghavan, Colorado Springs, CO (US);
Cristinel Zonte, Colorado Springs, CO (US);
Vijay Kumar Srinivasa Raghavan, Colorado Springs, CO (US);
Cristinel Zonte, Colorado Springs, CO (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A device for providing a high precision current reference comprising a PTAT generator circuit for supplying a voltage, a high precision current reference offset generator circuit for generating a high precision current offset to compensate for variation in a resistance component due to variation in temperature, and a current adding circuit for aggregating the current from the PTAT generator circuit and the current from the high precision current reference offset generator circuit. In one embodiment, a high precision current reference generated is substantially independent of temperature. On-chip resistors may be used to design a high precision current reference. Accordingly, high precision current reference generated maintains high precision with zero temperature co-efficient using on-chip resistors that are substantially cheaper than off-chip resistors.
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