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. 30, 1998
Filed:
Apr. 04, 1996
Johannes Stecker, Munich, DE;
Klaus Luther, Munich, DE;
Kurt Hoffmann, Taufkirchen, DE;
Oskar Kowarik, Neubiberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An integrated buffer circuit includes a first series circuit connected between a first supply potential and a second supply potential (ground). The first series circuit has a voltage-controlled first constant current source, a first field effect transistor having a gate forming an input of the buffer circuit, a circuit node between the first current source and the first field effect transistor forming an output of the buffer circuit, and a first control input for controlling the first current source with a reference potential having a constant potential difference relative to the first supply potential. A second series circuit is connected between the first supply potential and the second supply potential. The second series circuit has a first resistor, a second constant current source furnishing a current being independent of the first supply potential, and a circuit node between the first resistor and the second current source, establishing the reference potential and being connected to the first control input of the first current source.