Variable reluctance sensor interface for engine-speed and position sensing
The MAX9924UAUB+ accepts a differential input from a VR coil and outputs a logic-level pulse train. It draws 5 mA and operates from -40°C to 125°C.
Differential input and logic output — what they mean for the BOM
The differential input rejects common-mode noise on long leads. The logic output provides a clean digital pulse. The 5 mA supply current sets the regulator budget.
Package and mounting — board-fit details
The MAX9924UAUB+ is supplied in a 10-pin uMAX/uSOP surface-mount package, 3.00 mm body width, 0.118" pitch. That is a small footprint — roughly 3 mm × 3 mm — so it fits on compact sensor-conditioning boards alongside the microcontroller or ECU.
Lifecycle and sourcing reality
The MAX9924UAUB+ is listed as Active and ROHS3 compliant. There is no NRND flag, no last-time-buy window, and no official successor — this part is still the current design-in choice from Analog Devices for VR sensor interface applications. No LTB risk, no cross-reference needed for new production.