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active filter

   Also found in: Wikipedia 0.03 sec.
active filter [′ak·tiv ′fil·tər]
(electronics)
A filter that uses an amplifier with conventional passive filter elements to provide a desired fixed or tunable pass or rejection characteristic.


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The SPI-4 standard not only doubles the raw speed but addresses the protocol overhead with paced data transfer mode, which includes a free-running clock, driver pre-compensation (pre-comp), optional adaptive active filter receivers (AAF), quick arbitration and selection (QAS), and packetized commands and messaging.
AAF (Adaptive Active Filter, also known as "receiver equalization with filtering"): AAF is a closed-loop method of improving received signal quality by amplifying the fundamental frequency of the signal while filtering noise and other undesirable components.
0 Active Filter Design Tool that simplifies active-filter design.
 
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