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:
Oct. 20, 1987
Filed:
Apr. 28, 1986
Applicant:
Inventor:
Dennis M Monticelli, Fremont, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330260 ; 330257 ; 330291 ;
Abstract
An integrated circuit voltage follower buffer amplifier is provided with a feedback capacitor that is coupled to produce positive feedback current that acts to enhance slew rate. In an op amp a polarity sensitive slew rate enhancement acts to correct slew rate asymmetry. Circuits are shown for avoiding assymetry or boosting slew rate of both polarities. In all cases, the positive feedback current is made proportional to the rate of change of the output voltage.