Allegro MicroSystems has announced the release of its most advanced transmission speed sensor family members, complete with ASIL B certification.
The A19520, A19530 and A19570 magnetic sensor ICs measure speed and direction information and integrate EMC protection capacitors. The sensors also incorporate Allegro's SolidSpeed digital architecture, a mixed-signal architecture that enables the widest dynamic range of air gap, distinction of vibration versus rotation, stray field immunity, and highly adaptive performance.
Each product brings a unique offering to the family. The A19520 allows compatibility with existing transmission designs, thanks to its high performance and selectable output protocols. It uses Hall effect technology and a two-wire interface.
The A19530 provides advanced signal processing, open/short detection capability, and selectable speed or speed and direction output protocols. It uses Hall effect and a three-wire interface.
Using GMR and a two-wire interface, the A19570 brings the same high algorithmic performance as its Hall effect counterparts, but at significantly larger air gaps and with flexible device orientations.
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