UGN-3013T

The UGN-3013T has the following features including 4.5 V to 24 V Operation;Magnetically Driven Output;High Reliability-No Moving Parts;Small Size;Output Compatible with All Digital Logic Families;Constant Output Amplitude.

LOW-COST Type UGN-3013 Hall Effect integrated circuits excel in applications not requiring extreme magnetic sensitivity, broadly spaced hysteresis boundaries, or premium operating temperature ranges. In all other respects, the economical, magnetically activated switches meet the high standards for fast, rugged, and reliable performance set by other Sprague Hall Effect devices.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 a wide range of supply-voltages.The switches' open-collector outputs can 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.Total effective air gap is the sum of active area depth and the distance between the package's surface and the magnet's surface.

The most common modes of operation are head-on and slide-by. As shown in the drawing at right,the magnet's polar axis is the centerline of the Hall Effect package. Change of operating states in the head-on mode is accomplished by decreasing or increasing the distance between the magnet and Hall cell.The output transistor is OFF when the flux density of the magnetic field perpendicular to the surface of the chip is below threshold (the operate point).When flux density reaches the operate point, the output transistor switches ON and is capable of sinking 25 mA of current.A wide variety of magnets is commercially available. Each type of magnet exhibits unique magnetic field characteristics. The magnets used to construct the Flux Density graph were measured for the head-on mode of operation, but the graph's information is valid for peak flux density in the slide-by mode of switch activation.