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:
Oct. 31, 2000
Filed:
May. 14, 1999
Applicant:
Inventors:
Marco de Micheli, Binago, IT;
Salvatore Portaluri, Pavia, IT;
Giacomino Bollati, Castel San Giovanni, IT;
Melchiorre Bruccoleri, Rho, IT;
Assignee:
STMicroelectronics, S.r.l., Agrate Brianza, IT;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
327553 ; 327103 ;
Abstract
Embodiments of the invention provide a transconductance control circuit, particularly for a continuous-time filter, comprising a transconductor across which a constant voltage is input. The transconductor is connected to a digital-to-analog converter (DAC) to set a reference current. A feedback loop is provided between an output of the transconductor and an input. In particular, the circuit further comprises a means for mirroring the reference current set by the DAC both to the feedback loop and to at least one cell of a cascade-connected filter.