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:
Mar. 09, 1999
Filed:
Mar. 20, 1997
Gregory L Schaffer, Cupertino, CA (US);
Maxim Integrated Products, Sunnyvale, CA (US);
Abstract
Disclosed is an operational amplifier having a positive input terminal, a negative input terminal, an output terminal, a positive power supply input and a negative power supply input. The operational amplifier includes a transistor input pair being coupled to the positive input terminal and the negative input terminal. A first charge pump being coupled to positive supply circuitry contained within the operational amplifier. The first charge pump being configured to operate the positive supply circuitry contained within the operational amplifier at an enhanced positive power supply. The operational amplifier further includes a second charge pump being coupled to negative supply circuitry contained within the operational amplifier. The second charge pump being configured to operate the negative circuitry contained within the operational amplifier at an enhanced negative power supply. Accordingly, the transistor output pair provides an essentially full rail-to-rail output.