Magnetic Speed Sensors
High-Accuracy Hall-Effect Transmission Speed Sensor IC with ASIL B Compliance
A19420
The A19420 provides precise speed sensing for ring magnets or ferrous targets, with ASIL B compliance for functional safety in automotive applications. Features include a two-wire interface, integrated diagnostics, and differential sensing for robust performance.
Product Details
Product Details
Top Features
- Differential Hall-effect sensor measures ring magnets and ferrous targets with inherent stray field immunity
- SolidSpeed Digital Architecture™ supports advanced algorithms, maintaining pitch and duty cycle accuracy during dynamic air gap disturbances
- Integrated solution includes a capacitor in a single overmolded package
- ISO 26262:2011 ASIL B with integrated diagnostics and certified safety design process (pending assessment)
- Two-wire current source output protocol supporting speed and ASIL error reporting
- EEPROM enables traceability throughout product life cycle
Target Application
- Transmission
- 2W-xEV Power
Part Number Specifications and Availability
Design Tools
Technical Documentation
Application Note
Allegro Microsystems - Chemical Exposure of Devices New
Application Note
Allegro Hall-Effect Sensor ICs New
Application Note
Methods and Validation of Stray Magnetic Field Mitigation in Magnetic Speed Sensor ICs
Application Note
Fundamental Properties of Speed Sensors
Guide
Guidelines for Designing Subassemblies Using Hall-Effect Devices New
Guide
Hall-Effect IC Applications Guide New
Technical Article
Back-Biased Packaging Advances (SE, SG, SH, and SJ versus SA and SB)
Technical Article