Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 15, 2011
Patent Application Number
12571038
Date Filed
September 30, 2009
Patent Primary Examiner
Patent 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.
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