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.:

US 9170589 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 27, 2015

Filed:

Jun. 23, 2013
Applicant:

Bogdan Alexandru Georgescu, Calgary, CA;

Inventor:
Assignee:

Other;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 3/16 (2006.01); G05F 3/20 (2006.01); G05F 1/46 (2006.01);
U.S. Cl.
CPC ...
G05F 1/461 (2013.01);
Abstract

A novel fully integrated adjustable DC current reference is developed. The reference current is set by the ratio of a DC voltage generated using a band-gap reference and a tuned resistor based on an inductor reference. An AC signal is necessary to develop a relationship between the resistor tuned and the inductor reference. A computation unit which could be designed as an analog circuit is necessary to compute the value of the resistor in relationship to the reference inductor. Classic circuits are used to develop and analyze the relationship between the reference inductor and the tunable resistor that sets the DC current reference. Results show that the value of the inductance is insensitive to process, voltage and temperature variations. Therefore, assuming the DC bandgap reference voltage is insensitive to changes in process, voltage and temperature variations, so is the DC current reference.


Find Patent Forward Citations

Georgescu, Bogdan. (2015). Fully integrated adjustable dc current reference based on an integrated inductor reference (U.S. Patent No. 9170589). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9170589

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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