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. 19, 2009
Filed:
Apr. 30, 2007
Odile Dequiedt, Dresden, DE;
Wolfram Kluge, Dresden, DE;
Odile Dequiedt, Dresden, DE;
Wolfram Kluge, Dresden, DE;
Atmel Germany GmbH, Heilbronn, DE;
Abstract
An operational amplifier and use of an operational amplifier is provided that includes an input differential amplifier, which is connected to a first input and to a second input and a differential output stage, which is connected to the input differential amplifier and a first output and a second output. The differential output stage has a first branch with two first transistors, whose drain and/or collector are connected to one another and to the first output. The differential output stage has a second branch with two second transistors, whose drain and/or collector are connected to one another and to the second output. The first gates and/or the first bases of the two first transistors in the first branch are connected to one another and to a first output of the input differential amplifier. The second gates and/or the second bases of the two second transistors in the second branch are connected to one another and to a second output of the input differential amplifier. The differential output stage has a constant current source, which is connected to each branch to supply a current through the branches.