A19303 Optimized Hall Effect IC
Allegro's A19303 is a vibration-tolerant, high-accuracy, Hall effect wheel speed and direction sensor IC
Allegro’s A19303 IC features a vibration detection algorithm to prevent undesired output due to vibration. The algorithm is optimized for wheel speed application with minimal delay to output. It is an optimized Hall effect IC with PW and AK protocols that provide a user-friendly two-wire solution for applications where pitch accuracy is important for determining the sensed target's speed and direction.
The IC’s SolidSpeed Digital Architecture™ offers intelligent algorithms capable of maintaining stable operation during dynamic air gap movements. The sophisticated digital controller provides highly accurate speed and direction information with vibration detection ideal for ABS applications. The IC includes built-in EEPROM scratch memory for device traceability throughout sensor module production.
The A19303 has two configuration options: magnetic temperature compensation (ferrite for ring magnet application and SmCo for back bias application) and vibration immunity (immediate blanking of output on detection of vibration and delayed blanking of output to allow for immediate output on direction change).
- Hall effect technology allows ease of use for ring magnet and ferromagnetic target sensing with back-biased magnet
- Vibration detection optimized for wheel speed applications allows for blanking of vibration on vibration with minimum delay in output recovery
- Digital PW and AK protocol provides speed and direction information, signal integrity, and functional status
- Integrated capacitor in a single overmolded miniature package provides greater EMC robustness
- SolidSpeed Digital Architecture supports advanced algorithms, maintaining pitch accuracy during dynamic air gap disturbances
- EEPROM enables traceability throughout the product life cycle
- ADAS
- Wheel speed sensing
- Industrial
- 2-wheeler wheel speed sensing
