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. 05, 2009
Filed:
Aug. 03, 2006
Philip Golden, London, GB;
Peter Mole, St. Albane, GB;
Barry Harvey, Los Altos, CA (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
An embodiment of an amplifier includes an amplifier output node operable to provide an output signal, and an output stage. The output stage includes a drive buffer having an input node and an output node, a drive transistor, and a compensation capacitor. The drive transistor has a control node coupled to the output node of the drive buffer, a first drive node, and a second drive node coupled to the amplifier output node. And the compensation capacitor has a first node isolated from the control node of the drive transistor by the drive buffer, and has a second node coupled to the amplifier output node. By buffering the control node of the drive transistor, one may reduce the level of nonlinear current referred back to the amplifier input as a nonlinear offset voltage, and thus may reduce the level of nonlinear distortion that his nonlinear offset voltage generates at the amplifier output.