Programmable switched capacitor circuit

Details Programmable switched capacitor circuit Programmable switched capacitor circuit

1994-02-10

1997-03-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

By integrating

327554, 327561, H03H 1112

Patent

active

056083459

ABSTRACT:
A switched capacitor circuit is described which is programmable so that its function can be set by a user. Thus, control circuitry and selection circuitry are provided to enable one of a plurality of alternative control signals to be provided to switch circuits of the switched capacitor circuit. In this way, the function of the switched capacitor circuits can be altered. Where there are a plurality of switched capacitor circuits connected in an array, the topology of the array can be altered by suitably routing particular input signals to particular outputs by selecting the control signals to control the switched circuits. A field programmable array of this type is also described.

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patent: 4378538 (1983-03-01), Gignoux
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"Microprocessor Programmable Universal Active Filters," (Maxim Integrated Products Inc.), Elektor Electronics, vol. 17, No. 195, Dec. 1991, Canterbury, GB, pp. 64-69.
Lee et al., "Exact Synthesis of N-path Switched Capacitor Filters".
Herbst et al., "VIS-SC-Filters with reduced influences of parasitic capacitamces", Apr. 1982, pp. 29-39, IEE Proe., vol. 129, pt. G, No. 2.

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