Differential Two-Wire Hall Effect Sensor IC

The Hall Effect sensor IC TLE4942-1 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 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.

Features

• Two-wire PWM current interface

• Detection of rotation direction

• Airgap diagnosis

• Assembly position diagnosis

• Dynamic self-calibration principle

• Single chip solution

• No external components needed

• High sensitivity

• 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