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. 20, 2010
Filed:
Mar. 12, 2009
Koichi Yamada, Kanagawa, JP;
Koichi Yamada, Kanagawa, JP;
Tektronix International Sales GmbH, Rheinfall, CH;
Abstract
Power consumption of current sources in an amplifier circuit is reduced even during amplifier operation while keeping linearity of an output signal. The amplifier circuit is suitable for use in a signal generator that provides an output signal previously set by a user and having a known level. Positive and negative current sources receive an input voltage Vi depending on an output voltage Vo. An output resistor derives the output voltage Vo from currents provided by the positive and negative current sources. A variable bias generation circuit produces positive and negative bias voltages applied to the positive and negative current sources wherein the positive and negative bias voltages are set while the linearity of the output voltage is maintains using the known output level information.