Integrated active filter without external components

Details Integrated active filter without external components Integrated active filter without external components

1987-04-08

1989-02-28

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Integrated circuits

357 45, H03F 304

Patent

active

048089478

ABSTRACT:
An integrated circuit selectively programmable to form an active filter without external circuit components, the integrated circuit having 2.sup.m amplifying modules where m is an integer between 2 and 4, inclusive, p resistive matrices where p is 1 when m is other than 4 and is 2 when m=4, and a bias circuit, r of the amplifying modules being positioned in a first column separated from a second column of r amplifying modules by a respective one of the resistive matrices, where r=4 when m is other than 2 and r=2 when m=2, the second column of amplifying modules being separated from a third column of 4 amplifying modules when m=4 by a second of the resistive matrices.

REFERENCES:
patent: 4641108 (1987-02-01), Gill, Jr.

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