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:
Dec. 26, 2000
Filed:
Dec. 02, 1998
Applicant:
Inventor:
Douglas L Smith, Tucson, AZ (US);
Assignees:
Maxim Integrated Products, Inc., Sunnyvale, CA (US);
Gain Technology Corp., Tucson, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330263 ; 330267 ;
Abstract
The present invention teaches output stages having distortion performance improved relative to prior art class-AB output stage distortion performance. The general concept is to constantly bias the feed-forward circuitry of the output stage into a low-distortion operating state. This can be done through several different methods, each of which has its own particular circuit requirements. For example, in one embodiment the bias circuitry generates a near constant bias current suitable for forcing the feed-forward circuitry into a low-distortion operating state regardless of the output stage output value.