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:
Sep. 08, 1992
Filed:
Sep. 24, 1991
Applicant:
Inventors:
Derek F Bowers, Sunnyvale, CA (US);
Peter S Henry, Fremont, CA (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330268 ; 330 51 ; 330300 ;
Abstract
The output stage for a feedback amplifier has a diode circuit to provide quiescent current to the output transistors, and a diode turnoff circuit that renders the diodes non-conductive for an input signal that sends the stage output voltage low. A swing transistor between the stage's output terminal and a low voltage bus is actuated by the same input signal to drive the output voltage to the level of the low voltage bus. Both the diode turnoff circuit and the swing transistor are preferably MOSFETs.