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:
Jan. 15, 2002
Filed:
Jul. 28, 2000
Applicant:
Inventor:
John S. Clapp, III, Wyomissing, PA (US);
Assignee:
Agere Systems Guardian Corp., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/16 ;
U.S. Cl.
CPC ...
G05F 3/16 ;
Abstract
An emitter or source follower is added to a current mirror and, more particularly, to a cascoded current mirror that uses beta helpers to reduce the mirror error due to base currents for restoring a Vbe of voltage compliance to the cascoded current mirror, thus allowing the use of a cascoded current mirror in applications where it could not otherwise be used due to voltage compliance problems.