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These Hall-effect devices contain a monolithic integrated circuit which incorporates a Hall element, a linearamplifier, a threshold amplifier, and Schmitt trigger on a single Hallogic® silicon chip. Included on-chip is a bandgapvoltage regulator that allows operaTIon with a wide range of supply voltages. These devices feature logic leveloutput and provide up to 21 mA of sink current. This allows direct driving of more than 7 TTL loads or anystandard logic family using power supplies ranging from 4.5 to 24 volts. Output amplitude is constant at switchingfrequencies from DC to over 200 kHz.The Uni-Polar turns on with a (logic level “0”) after a sufficient magneTIc field from the south pole of a magnetapproaches the symbolized face of the device (operaTIng point) and turns off (logic level “1”) after the magneTIcfield reaches a minimum value. The Bi-Polar device turns on (logic level “0”) in the presence of a magnetic southpole and turns off (logic level “1”) when subjected to a magnetic north pole. Both magnetic poles are necessary foroperation for Bi-Polar devices. This feature makes these sensors ideal for applications in non-contact switchingoperations, brushless DC motors and for use with multiple pole magnets.B and S devices are processed to OPTEK’s military screening program patterned after MIL-STD-883. Thisproduct has passed Radiation Hardness testing up to 350 Krad (si) per MIL-STD-883 method 1019.6 and up to100 Krad (si) for ELDRS.
