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:
Aug. 07, 2001
Filed:
Jun. 19, 2000
Stefano Marchese, Pavia, IT;
Giacomino Bollati, Castel San Giovanni, IT;
Maurizio Malfa, Pontenuovo Magenta, IT;
Pierandrea Savo, Pavia, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A transconductor includes a differential stage formed by a pair of input transistors, and a resistive line of degeneration connecting the sources of the input transistors. A bias current generator is coupled between the source of each input transistor and ground. The resistive line of degeneration is formed by one or more transistors connected in series, the gates of which are coupled to a voltage reference. The voltage reference is at least equal to the common mode voltage of the differential stage. The one or more transistors forming the resistive line of degeneration are sized to operate in the triode region.