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:
Jun. 29, 2004
Filed:
Jan. 23, 2003
Applicant:
Inventor:
Oleksiy Zabroda, Fair Oaks, CA (US);
Assignee:
STMicroelectronics, Inc., Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A method and circuit are disclosed for mirroring current. The circuit includes a reference branch through which a first current flows, and at least one mirror branch through which a second current flows that is proportional to the first current. The circuit further includes a current amplifier having an input coupled, via a capacitor, to the reference branch and an output coupled to one of the reference branch and the at least one mirror branch. The current amplifier provides, at relatively high frequencies, a current to the circuit that substantially compensates for current passing through a parasitic capacitance appearing in the circuit.