Comparator

Details Comparator Comparator

1981-06-01

1983-08-30

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307264, 307291, 307475, H03K 524, H03K 508

Patent

active

044019017

ABSTRACT:
A high speed, low power, latching, difference amplifier giving Feedback Emitter Coupled Logic level output voltages. The comparator operates with low voltage swings between logic levels to minimize propagation delay and heat dissipation. Efficiency is aided by diverting unneeded current away from the input stage to the latch stage during the latch enabled state, and the input slew rate to the comparator is effectively increased by clamping the input terminals with Schottky diodes. The amplifier works on a restricted common mode range, and normally has its reference voltage input grounded, although other reference voltages may be used. The output can be either positive or negative true. Propagation delay is under 4 nanoseconds, minimum sensitivity is 5 millivolts, and heat dissipation is under 50 milliwatts.

REFERENCES:
patent: 3651421 (1972-03-01), Beelitz
patent: 4056740 (1977-11-01), Schoeff

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