Description

The TLE4946H is a differential two-wire Hall Effect sensor IC that falls under the product category of Magnetic Sensors - Switches. It 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 sensor operates without external components and combines a fast power-up time with a low cut-off frequency. It boasts excellent accuracy and sensitivity, making it suitable for harsh automotive requirements with its wide temperature range, high ESD robustness, and high EMC resilience. The TLE4942C variant includes an overmolded 1.8nF capacitor for improved EMI performance. This sensor also features a dynamic self-calibration principle, making manufacturing and elimination of magnet offsets easier.

Specifications and 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
• TLE4942C: 1.8nF overmolded capacitor

Application Scenarios

The TLE4946H Hall Effect sensor IC is widely used in modern vehicle dynamics control systems and ABS. It offers rotational speed and direction information, assembly position diagnosis, and airgap diagnosis. With its high accuracy, sensitivity, and resistance to harsh automotive conditions, it is an ideal choice for automotive applications that require precise control and monitoring of rotational movements.

Comparison

• High accuracy and sensitivity
• Wide temperature range
• High ESD robustness
• High EMC resilience
• Easy manufacturing with integrated dynamic offset compensation

• Requires a two-wire PWM current interface
• No overmolded capacitor in the TLE4946H variant