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. 27, 2004
Filed:
Sep. 27, 2001
Applicant:
Inventor:
Mehmet M. Eker, Santee, CA (US);
Assignee:
Applied Micro Circuits Corporation, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A biasing circuit for producing a bias current which is supply-independent and temperature-stable includes a first voltage generating circuit which produces a first voltage V at an output; a second voltage generating circuit which produces a second voltage V different from the first voltage V at an output; a differential amplifier circuit having inputs coupled to the outputs of the first and the second voltage generating circuits and producing a reference voltage V based on a difference between the first voltage V and the second voltage V ; and a current generating circuit which produces a bias current I from the reference voltage V .