Differential Hall Effect Speed Sensor

Differential Hall sensor TLE4957 is the ideal choice for designers who prefer to use a three-wire voltage interface rather than a two-wire current interface in applications such as transmission speed sensing. TLE4957 outperforms other devices thanks to its higher digital noise constant (DNC) at start-up and its switching algorithm’s increased hysteresis level. It is also available with adaptive hidden or adaptive visible hysteresis. The dynamic self-calibration principle together with the option of south north pole pre-induction, sophisticated protection technology and optional iBB-package make TLE4957 ideal for automotive and industrial speed sensing applications.

• High sensitivity
• Adaptive thresholds
• Hidden adaptive hysteresis
• Large operating air gap
• Advanced performance by dynamic self calibration principle
• Wide frequency range of 1Hz to 8kHz
• Digital output signal
• Wide operating temperature ranges of -40°C=Tj=+175°C
• Reverse voltage protection at Vs-pin
• Short-circuit and over-temperature protection of output
• Module style package with two integrated capacitors
  • 4.7nF between Q and GND
  • 47nF between Vs and GND: Required for micro cuts in power supply and optimal EMC robustness