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:
Jul. 02, 2002
Filed:
Nov. 16, 2001
Frank Kronmueller, Neudenau, DE;
Paul Zehnich, Altrip, DE;
Dialog Semiconductor GmbH, Kircheim-Nabern, DE;
Abstract
A non-linear current mirror is achieved. The non-linear current mirror is particularly useful in the output stage of an operational transconductance amplifier for improving slew rate and stability while maintaining low bias current. The non-linear current mirror circuit comprises, first, a first MOS transistor has gate and drain are coupled together and further coupled to a first current input. A second MOS transistor has gate coupled to the first MOS transistor gate, and the drain is coupled to a second current input. A third MOS transistor has drain is coupled to the second MOS transistor source, and the gate is coupled to the second MOS transistor drain. A fourth MOS transistor has gate coupled to the third MOS transistor gate. The source is coupled to the first MOS transistor source and the third MOS transistor source. Finally, the drain forms a current output.