Differential input-single output two pole filter implemented by

Details Differential input-single output two pole filter implemented by Differential input-single output two pole filter implemented by

1987-10-02

1988-11-01

Mullins, James B.

Amplifiers

Signal feedback

Phase shift means in loop path

330294, 330306, H03F 134

Patent

active

047823054

ABSTRACT:
An analog two pole filter is provided which uses a single amplifier to implement a predetermined transfer function. The filter has a differential input and converts the two inputs to a single output utilizing the same amplifier which performs the filtering function. By coupling a capacitor across the differential input and utilizing the differential aspect of the input signals, the capacitor may be implemented with half the capacitance otherwise required to implement the predetermined transfer function, thereby minimizing circuit area.

REFERENCES:
patent: 3939468 (1976-02-01), Mastin
patent: 4241428 (1980-12-01), Berni et al.
patent: 4242741 (1980-12-01), Parrish
patent: 4588956 (1986-05-01), de Corlieu et al.

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