Allegro MicroSystems Inc. Crankshaft Position Sensor IC with Speed and Direction Output A1696PUC

The A1696PUC is a 3-pin SIP Hall-effect sensor IC with integrated EMC protection, designed for zero-speed digital crankshaft position sensing in automotive applications. It provides speed and direction information via a variable pulse-width output protocol using an open-drain output, with forward pulse widths of 22.5 µs or 45 µs and reverse pulse widths of 45 µs or 90 µs, depending on configuration. The device operates over an ambient temperature range of -40 to 160 °C and features programmable options for target profiling, vibration recovery, and output protocol. It supports sensing of ring magnets or back-biased ferromagnetic targets and employs three differential Hall channels for high accuracy across varying air gaps and temperatures. The package is lead-free with 100% tin plating.