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:
May. 03, 2005
Filed:
Aug. 31, 2002
Ercan Ramazan, Vallauris, FR;
Richard Gaggl, Villach, AT;
Frederic Pecourt, Mouans-Sartoux, FR;
Christian Schranz, Villach, AT;
Ercan Ramazan, Vallauris, FR;
Richard Gaggl, Villach, AT;
Frederic Pecourt, Mouans-Sartoux, FR;
Christian Schranz, Villach, AT;
Infineon Technologies AG, Munich, DE;
Abstract
The invention relates to a multistage differential amplifier having an input stage, at which a differential input voltage is present, a load connected to the input stage, a CMFB circuit and an output stage, at which an amplified differential output voltage is output. In order to improve the stability of a common-mode regulating loop, a current source is provided, which additionally feeds current into the regulating loop and thereby ensures that a control voltage for the load does not fall below a predetermined value.