Comparator circuit operating on variable current

Details Comparator circuit operating on variable current Comparator circuit operating on variable current

1995-08-31

1997-06-24

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327108, 327490, 327544, 327563, 330261, H03K 524, H03F 345

Patent

active

056420625

ABSTRACT:
A comparator circuit includes a differential amplifier circuit (5, 6, and 7) which receives a first input voltage and a second input voltage, and outputs a comparison result signal by comparing the first and second input voltages, a current circuit (8) which supplies a driving current to activate the differential amplifier circuit, and a current control circuit (2) which is connected to the differential amplifier circuit and the current circuit. The current control circuit is deactivated when the first input voltage is lower than the second input voltage, and is activated when the first input voltage is higher than the second input voltage to reduce the driving current supplied.

REFERENCES:
patent: 4874969 (1989-10-01), Meadows
patent: 4987379 (1991-01-01), Hughes
patent: 5126683 (1992-06-01), Ishikawa et al.
patent: 5182525 (1993-01-01), Theus
patent: 5283535 (1994-02-01), Sevenhans et al.
patent: 5367211 (1994-11-01), Giordano et al.

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