Amplifiers – With semiconductor amplifying device – Including signal feedback means
Reexamination Certificate
2010-04-27
2011-11-15
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including signal feedback means
C330S310000, C330S099000, C330S098000
Reexamination Certificate
active
08058931
ABSTRACT:
An apparatus for an improved operational amplifier. The disclosed improved operational amplifier comprises an operational amplifier, a first feedback circuit, and one or more secondary feedback circuits. The operational amplifier include a plurality of serially coupled gain stages and is configured so that an output of each gain stage drives an input of a next gain stage and an output of a last gain stage drives a load external to the improved operational amplifier. The first feedback circuit is coupled between an output of a designated gain stage and an output of a previous gain stage to provide a first feedback to the previous gain stage. Each secondary feedback circuit provides an additional feedback to the output of the previous gain stage.
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Linear Technology Corporation
McDermott Will & Emery LLP
Nguyen Patricia
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