TLE4941PLUSCBXTMA1

The differential Hall sensor IC detects the motion of ferromagnetic and permanent magnet structures by measuring the differential flux density of the magnetic field. To detect the motion of ferromagnetic objects the magnetic field must be provided by a back biasing permanent magnet. Either south or north pole of the magnet can be attached to the back side of the IC package. Magnetic offsets of up to ± 30mT and device offsets are cancelled by a self-calibration algorithm. Only a few magnetic edges are necessary for self-calibration. After the offset calibration sequence, switching occurs when the input signal crosses the arithmetic mean of its max. and min. value (e.g. zero-crossing for sinusoidal signals).

• Two-wire current interface
• Dynamic self-calibration principle
• Single chip solution
• No external components needed
• High sensitivity
• South and north pole pre-induction possible
• High resistive to piezo effects
• Large operating air-gaps
• Wide operating temperature range
• TLE4941plusC: 1.8 nF overmolded capacitor
• Applicable for small pitches (2mm Hall element distance)
• Integrated back bias magnet as an option