Infineon TLE4922XANFHALA1 High-Precision Differential Hall Effect Speed Sensor

The Infineon TLE4922XANFHALA1 represents a significant advancement in the field of magnetic sensing technology, specifically engineered for high-precision speed detection in demanding automotive and industrial applications. As a differential Hall effect sensor, it is designed to deliver exceptional accuracy and reliability, even in the presence of external magnetic disturbances and harsh operating conditions.

This sensor operates on the principle of the Hall effect, where a voltage difference is generated across a conductor when exposed to a magnetic field. The "differential" aspect is its key innovation: it utilizes two Hall plates integrated monolithically on a single chip. This design allows the device to measure the magnetic field difference between these two points, effectively canceling out common-mode interference from stray magnetic fields or temperature variations. Consequently, the TLE49222XANFHALA1 provides a highly stable and precise digital output signal that corresponds directly to the speed and direction of a rotating target, such as a gear wheel or a multipole magnet.

A primary strength of this sensor is its robust performance in extreme environments. It features a wide operating voltage range from 3.0 V to 18 V and can function reliably at temperatures from -40 °C to 150 °C, making it perfectly suited for under-the-hood automotive applications like transmission and crankshaft speed sensing. Its high sensitivity enables it to detect very small air gaps and low magnetic fields, which is critical for modern, efficiency-focused designs. Furthermore, its reverse polarity protection and overvoltage protection enhance its durability and system-level integrity, safeguarding against common installation errors and voltage spikes.

The output is a digital current interface, which is highly resistant to noise and allows for long cable lengths without signal degradation. This ensures that the speed data transmitted to the engine control unit (ECU) or other systems is clean and accurate, which is vital for optimizing engine performance, enabling advanced driver-assistance systems (ADAS), and improving overall vehicle safety.

In summary, the Infineon TLE4922XANFHALA1 sets a high standard for reliability and precision in speed sensing. Its differential design, exceptional environmental robustness, and integrated protection features make it an indispensable component for modern automotive and industrial systems.

ICGOODFIND: A top-tier choice for engineers seeking unparalleled accuracy and resilience in magnetic speed sensing for critical motion control applications.

Keywords: Differential Hall Effect, High-Precision Speed Sensing, Automotive Grade, Magnetic Field Interference Immunity, Robust Performance.