The TLE4948C is a differential Hall effect sensor designed and manufactured by Infineon Technologies. This sensor is specifically tailored for wheel speed sensing in automotive applications but can also be utilized in other industrial applications requiring accurate rotational speed measurement. The device employs a differential Hall principle to detect changes in the magnetic field, which allows for high accuracy and robustness against external magnetic disturbances.

Applications:

• Automotive Wheel Speed Sensing: Primary application, providing accurate wheel speed data for ABS, ESP, and other vehicle control systems.
• Automotive Transmission Speed Sensing: Measures the rotational speed of transmission components.
• Industrial Rotational Speed Measurement: Used in various industrial applications to monitor the speed of rotating machinery.
• Motor Speed Control: Provides feedback for precise motor speed control in industrial and automotive applications.
• Position Detection: Can be adapted for position detection in rotating systems.

Features:

• Differential Hall Effect Sensing: Provides high accuracy and immunity to external magnetic fields.
• Wide Operating Temperature Range: Suitable for harsh automotive and industrial environments.
• High Sensitivity: Detects small changes in magnetic fields, ensuring accurate speed measurement.
• Digital Output: Provides a digital output signal compatible with microcontrollers and other digital systems.
• Robust Design: Designed for reliable operation in demanding applications.

Benefits:

• Enhanced Safety Systems: Provides accurate wheel speed data for ABS and ESP, improving vehicle safety.
• Improved Vehicle Performance: Enables precise control of engine and transmission systems.
• Reduced System Cost: Integrated sensor solution minimizes the need for external components.
• Increased Reliability: Robust design ensures reliable operation in harsh environments.
• Simplified System Design: Digital output simplifies integration with microcontrollers and other digital systems.

Additional Details:

The TLE4948C operates within a specified voltage range and features a digital output that is compatible with standard microcontroller interfaces. Its differential Hall sensing principle makes it highly resistant to magnetic interference, ensuring accurate speed measurements even in noisy environments. The sensor is designed to withstand the harsh conditions found in automotive and industrial applications, including extreme temperatures, vibration, and humidity. Its compact size and robust construction make it an ideal choice for a wide range of speed sensing applications.