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:
Feb. 15, 2011
Filed:
Sep. 30, 2009
Franklin Marshall Murden, Ii, Roan Mountain, TN (US);
Scott Gregory Bardsley, Gibsonville, NC (US);
Michael Elliott, Summerfield, NC (US);
Franklin Marshall Murden, II, Roan Mountain, TN (US);
Scott Gregory Bardsley, Gibsonville, NC (US);
Michael Elliott, Summerfield, NC (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Operational amplifier embodiments are provided to enhance amplifier parameters such as bandwidth, stability, and headroom. In an amplifier embodiment, transistor followers are arranged with first and second differential pairs to facilitate selective positioning of first and second transfer function poles to enhance bandwidth and resistors and inductors are arranged to facilitate selective positioning of complex third transfer function poles to enhance phase margin. In another amplifier embodiment, the transistor followers are arranged to reduce headroom limitations to thereby enhance the voltage swing of output signals.