GENERAL DESCRIPTION
The Speed & Direction Hall-effect sensor has two distinct Hall sensing elements precisely located 1.4 mm apart on a single integrated circuit chip, which is then encapsulated in a thermoset molding material. Two active Hall latches provide indication of the speed and direction of a magnetic gradient across the face of the package, such as the gradient from a rotating ring magnet. The small, 4-pin SOT89 style package surface mounts on PC boards and flexible circuits. Built-in temperature compensation is optimized to match the temperature coefficient of low cost magnets and track their performance over temperature. Latching magnetics are standard for reliable operation.

FEATURES
Single miniature plastic package includes two separate Hall sensors
Frequency signal for speed output
Logic level (High or Low) signal for direction output
Temperature compensated magnetics
Functionality of two discrete Hall sensors and logic circuitry outputs
Symmetry of operate/release points about zero gauss (bipolar/latching)
Low current consumption
Wide operating voltage range

TYPICAL APPLICATIONS
Anti-pinch electric motor control systems for power windows, power seats (headrest), power sliding doors, sunroofs, garage door openers.
Magnetic encoding for electronic steering systems
Motion control sytems for pulleys and belts
Position and velocity detection
Fan control
Rotating shaft monitoring
Linear displacement sensing (using a magnetic strip of alternating poles)