The Hall effect sensor IC TLE4942-1C is designed to provide information about rotational speed, direction of rotation, assembly position and limit airgap to modern vehicle dynamics control systems and ABS. The output has been designed as a two wire current interface based on a Pulse Width Modulation (PWM) principle. The sensor operates without external components and combines a fast power-up time with a low cut-off frequency.
Excellent accuracy and sensitivity is specified for harsh automotive requirements as a wide temperature range, high ESD robustness and high EMC resilience. State-of-the-art BiCMOS technology is used for monolithic integration of the active sensor areas and the signal conditioning.
Finally, the optimized piezo compensation and the integrated dynamic offset compensation enable easy manufacturing and elimination of magnet offsets. The TLE4942-1C is additionally provided with an overmolded 1.8 nF capacitor for improved EMI performance.
Two-wire PWM current interface
Detection of rotation direction
Assembly position diagnosis
Dynamic self-calibration principle
Single chip solution
No external components needed
South and north pole pre-induction possible
High resistance to piezo effects
Large operating air-gaps
Wide operating temperature range
TLE4942-1C: 1.8 nF overmolded capacitor
Wheel speed applications with direction detection
Technical Assistance Center (TAC)