Comparator with signal related adaptive bias

Details Comparator with signal related adaptive bias Comparator with signal related adaptive bias

1977-10-25

1979-04-03

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307297, 307355, 330257, 330297, H03K 102, H03K 500

Patent

active

041479440

ABSTRACT:
A high gain differential amplifier is used in a comparator circuit. A bias control circuit is coupled to the differential amplifier so that its current is a multiple of the signal current. Input stage current drain is reduced by biasing the stage with a current source operating at a fraction equal to the signal current multiple. When so configured, the amplifier current and bias are related to the input current in a manner that permits good response to large signals and extended range response to small signals to give an extended dynamic range.

REFERENCES:
patent: 3530396 (1970-09-01), Rudolph
patent: 3935524 (1976-01-01), Cap et al.

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