US PATENT SUBCLASS 327 / 554
.~.~.~.~ Switched capacitor filter

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

524  DF  SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM {22}
551  DF  .~ Unwanted signal suppression {1}
552  DF  .~.~ Active filter {5}
553  DF  .~.~.~ Adjustable {2}
554.~.~.~.~ Switched capacitor filter

DEFINITION

Classification: 327/554

Switched capacitor filter:

(under subclass 553) Subject matter wherein a filter transfer function is determined by a particular capacitor arrangement which is variable dependent upon the switched connections controlled by an input clock signal.

(1) Note. The frequency or timing of the input clock signal dictates the characteristics and features of the signal filtering function.

SEE OR SEARCH THIS CLASS, SUBCLASS:

291+, for clock signal generating.

337, for an integrator having a switched capacitive arrangement.

365+, for the gating of an electrical signal between an input and an output.