UGN-3030T

The UGN-3030T has the following features including 4.5 V to 24 V Operation;For Use with Multipole Ring Magnets;High Reliability-No Moving Parts;Small Size;Output Compatible with All Digital Logic Families;Constant Output Amplitude.

BIPOLAR Type 3030 Hall Effect integrated circuits cleanly track rotation of multipole ring magnets as digital transducers in counter and control circuits. They provide logic-compatible output free of ringing or stuttering while operating in contaminated and electrically noisy environments. The magnetically activated electronic switches are available with two operating temperature ranges and in two three-pin plastic packages.Each Hall Effect circuit includes a voltage regulator, Hall voltage generator, signal amplifier,Schmitt trigger, and open-collector output on a single silicon chip. The on-board regulator permits operation over the supply-voltage range of 4.5 V to 24 V .The switches' open-collector outputs sink up to 20 mA at a conservatively rated repetition rate of 100 kHz. They can be used directly with bipolar or MOS logic circuits. Selected devices, with outputs capable of sinking 50 mA, are available on special order.

The simplest form of magnet that will operate the Hall Effect bipolar digital switch is a multipole ring magnet as shown in Figure 1. The magnet must pro- vide a +250 gauss to-250 gauss magnetic flux density range at the sensor to ensure reliable operation.Such magnets are commercially available and inexpenswe.Under power-up conditions, and in the absence of an externally applied magnetic field, the output transistor of most Type 3030 switches is ON and capable of sinking 25 mA of current. This is, however, a formally ambiguous state and should be treated as such.In normal operation, the output transistor turns ON as the strength of the magnetic field perpendicular to the surface of the chip reaches the Operate Point. The output transistor switches OFF as magnetic field reversal takes magnetic flux density to the Release Point.