Constant ratio, size insensitive, capacitor structure

Details Constant ratio, size insensitive, capacitor structure Constant ratio, size insensitive, capacitor structure

1986-11-03

1987-09-22

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

H01G 438

Patent

active

046959220

ABSTRACT:
The present invention involves a geometric structure for a pair of matched capacitors for use in an integrated circuit device. Each of the matched capacitors are composed of at least one of a unit capacitor and one or more subcapacitors arranged in abutting relationship. Each subcapacitor includes a tab projecting outwardly and an opening of similar size projecting inwardly. The tab is arranged to abut against the side of a unit capacitor or another subcapacitor. The tabs and openings are sized so that the area to peripheral length ratios of the matched capacitors are identical.

REFERENCES:
patent: 3368116 (1968-02-01), Spaude
patent: 4210950 (1980-07-01), Fraser et al.
patent: 4571816 (1986-02-01), Dingwall
J. L. McGreary et al., "All-MOS Redistribution Analog-to-Digital Conversion Techniques--Part 1", IEEE Journal of Solid-State Circuits, vol. SC-10, pp. 371-379, Dec. 1975.
D. J. Allstot et al., "Technological Design Considerations for Monolithic MOS Switched-Capacitor Filtering Systems", Proceedings of the IEEE, vol. 71, No. 8, pp. 967-986, Aug. 1983.

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