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:
Dec. 02, 1997
Filed:
Sep. 06, 1996
Shuran Wei, St. Paul, MN (US);
Alan Fiedler, Minneapolis, MN (US);
Paul Torgerson, Inver Grove Heights, MN (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A current reference circuit includes a first, current mirror transistor having a gate coupled to a first feedback node, a source coupled to a first supply terminal and a drain forming a first reference node. A second, current mirror transistor has a gate coupled to the first feedback node, a source coupled to the first supply terminal and a drain forming a second reference node. A third transistor has a gate coupled to a second feedback node, a source coupled to a second supply terminal and a drain coupled to the first reference node. A fourth transistor has a gate coupled to the second feedback node, a source coupled to the second supply terminal and a drain coupled to the second reference node. A first operational amplifier has a first input coupled to the first reference node, a second input coupled to a bias node and an output forming the first feedback node. A second operational amplifier has a first input coupled to the second reference node, a second input coupled to the bias node and an output forming the second feedback node. The operational amplifiers are active elements which allow the current reference circuit to operate at a very low voltage and have a very low sensitivity to changes in the supply voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile