Ratioed capacitances in integrated circuits

Details Ratioed capacitances in integrated circuits Ratioed capacitances in integrated circuits

1991-06-19

1993-04-20

Jackson, Jr., Jerome

Active solid-state devices (e.g., transistors, solid-state diode

Integrated circuit structure with electrically isolated...

Passive components in ics

361303, 361329, H01L 2702, H01L 2708

Patent

active

052045463

ABSTRACT:
In an integrated circuit in which the capacitances of a pair of capacitors are arranged to be in a ratio k by choosing the areas of corresponding plates of the two capacitors to be in this ratio, and the plates are shaped so that the total lengths of their boundaries are also in this ratio so as to reduce the sensitivity of k to manufacturing tolerances, this sensitivity is further reduced by arranging that the ratios between the numbers of 90.degree. corners exhibited by the respective plates, and the numbers of 270.degree. corners exhibited by the respective plates, are each also substantially equal to k. To make this possible an aperture is arranged to be present in each plate.

REFERENCES:
patent: 2107132 (1938-02-01), Smith
patent: 4210950 (1980-07-01), Fraser, Jr. et al.
patent: 4342143 (1982-08-01), Jennings
patent: 4654749 (1987-03-01), Kanai
patent: 4695922 (1987-09-01), Olmstead
patent: 4929998 (1990-05-01), Boudewijns
patent: 4949217 (1990-08-01), Ngo

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