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DATASHEET PDFUS5881.pdf

Features and Benefits
. Chopper stabilized amplifier stage
. New miniature package / thin, high reliability package
. Operation down to 3.5V
. CMOS for optimum stability, quality and cost

Applications
. Solid state switch
. Limit switch
. Current limit
. Interrupter
. Current sensing

Description
The US5881 is a unipolar Hall effect sensor IC fab-ricated from mixed signal CMOS technology. It in-corporates advanced chopper stabilization tech-niques to provide accurate and stable magnetic switch points. There are many applications for this sensor in addition to those listed above. The de-sign, specifications and performance have been optimized for applications of solid state switches.
The output transistor will be switched on (BOP) in the presence of a sufficiently strong South pole magnetic field facing the marked side of the pack-age. Similarly, the output will be switched off (BRP) in the presence of a weaker South field and remain off with ¡°0¡± field. The SOT-23 device is reversed from the UA package. The SOT-23 output transis-tor will be switched on (BOP) in the presence of a sufficiently strong North pole magnetic field sub-jected to the marked face.
Note: This is a static-sensitive device; please observe ESD precau-tions. Reverse VDD protection is not included. For reverse voltage protection, a 100Wresistor in series with VDD is recommended.