1.1 Target Application

The differential Hall Effect sensor TLE4953 is designed to provide information about rotational speed and direction

of rotation to modern transmission and ABS systems. 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 wide frequency range. 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 magnetic offsets. Adaptive hysteresis concept increases the noise

immunity. The TLE4953C is additionally provided with an overmolded 1.8 nF capacitor for improved EMI

performance.

1.2 Features

• Two-wire PWM current interface

• Detection of rotation direction

• Dynamic self-calibration principle & high sensitivity

• Adaptive hysteresis

• Single chip solution - no external components

• Vibration suppression in calibrated mode

• South and north pole pre-induction possible

• High resistance to piezo effects

• Large operating air-gaps

• Wide operating temperature range

• From zero speed up to 12 kHz

• 1.8 nF overmolded capacitor

• For coarse transmission target wheels

• Module style package with integrated overmolded capacitor1)

– 1.8nF between VDD and GND

• AEC-Q100 qualified

TLE4953属于传感器，变送器 > 磁性传感器 - 开关（固态）。英飞凌科技公司制造生产的TLE4953磁性传感器 - 开关（固态）该系列产品使用固态技术来检测是否存在超过某个特定幅度和/或标示的磁场，并提供指示是否存在此类磁场的双态输出。它们与磁簧开关以及线性或罗盘型固态器件不同，前者通过使用移动机械部件来提供类似的功能，后者提供指示所施加磁场的强度和/或方向的可变输出。