Amplifiers – With semiconductor amplifying device – Including signal feedback means
Reexamination Certificate
2011-03-01
2011-03-01
Mai, Lam T (Department: 2819)
Amplifiers
With semiconductor amplifying device
Including signal feedback means
C330S252000
Reexamination Certificate
active
07898337
ABSTRACT:
An amplifier, which may be used in a pipelined analog-to-digital converter, includes a first amplifier stage driving a second amplifier stage. At least one compensation capacitor is coupled to provide negative feedback through the capacitor from the second amplifier stage to the first amplifier stage. The slew rate of the amplifier is enhanced by substantially reducing the negative feedback coupled through the capacitor during a period following the transition of a signal applied to an input terminal of the amplifier. If the first stage of the amplifier has complementary signal nodes, the negative feedback coupled through the capacitor may be reduced, for example, by closing a switch coupled between first and second complementary nodes of the first amplifier stage.
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Dorsey & Whitney LLP
Mai Lam T
Micro)n Technology, Inc.
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