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. 09, 2008
Filed:
Feb. 28, 2007
Chang-feng Loi, Singapore, SG;
Kumar S/o Krishnasamy Maniam Nuntha, Singapore, SG;
Hung I Khoo, Singapore, SG;
Kin Soon Liew, Singapore, SG;
Jun Xia, Singapore, SG;
Chang-Feng Loi, Singapore, SG;
Kumar s/o Krishnasamy Maniam Nuntha, Singapore, SG;
Hung I Khoo, Singapore, SG;
Kin Soon Liew, Singapore, SG;
Jun Xia, Singapore, SG;
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A current supply includes a current mirror arrangement having a feedback circuit. The current supply includes a current mirror input stage connected to a constant current source providing a reference current; a current mirror output stage providing an output current substantially mirroring the reference current; and a feedback circuit feeding back to the current mirror input stage a feedback signal representing perturbations in the output current to cause the output current to more accurately mirror the reference current. In one embodiment, a dummy current mirror output stage substantially mirrors the reference current, and the feedback circuit receives a signal from the dummy current mirror output stage, and in response thereto, supplies the feedback signal to the current mirror input stage to cause the output current to more accurately mirror the reference current.