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. 12, 2012
Filed:
Dec. 15, 2009
Paulius Mosinskis, Richalandtown, PA (US);
Richard Booth, Riegelsville, PA (US);
Paulius Mosinskis, Richalandtown, PA (US);
Richard Booth, Riegelsville, PA (US);
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Abstract
In one embodiment, a combined VGA-and-equalizer (VGA-EQ) circuit for a communication link includes a current-mode logic ('CML') amplifier with an inductive load circuit. The CML amplifier has a gain control terminal and is operable to amplify, with an adjustable gain, a signal received at an input terminal and provide the amplified signal at an output terminal. The CML amplifier has a first gain at frequencies below a predetermined frequency value and a second gain at frequencies in a predetermined frequency range above the predetermined frequency value, wherein the second gain is higher than the first gain. The higher second gain of the VGA-EQ circuit causes a reduction in inter-symbol interference in a signal received by the receiver.