Small value precision integrated circuit resistors

Details Small value precision integrated circuit resistors Small value precision integrated circuit resistors

1992-08-18

1993-10-26

Lateef, Marvin M.

Electrical resistors

With terminal

With three or more terminals

338306, 338320, 338323, 338333, 338307, H01C 114, H01C 1012

Patent

active

052570053

ABSTRACT:
The effective parasitic end resistance of small-value precision integrated circuit resistors is reduced by providing N resistors connected in parallel and causing at least two of the resistors to share a terminal contact. The resulting integrated circuit resistor includes multiple terminal contacts of any number n greater than two. Of the n terminal contacts, N-1 terminal contacts are shared amongst said resistors. The parasitic end resistances are diminished by a factor equal to the number of resistors connected in parallel. By increasing the length of the active area of the N resistors by a factor equal to the number of the resistors, the desired resistance value remains undiminished. As a result, the parasitic end resistances may be made negligible compared to the desired resistance even for small value resistors.

REFERENCES:
patent: 3964087 (1976-06-01), Mallon
patent: 4219797 (1980-08-01), Huang
patent: 4654628 (1987-03-01), Takayanagi
patent: 4845462 (1989-07-01), van de Grift et al.

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