Allegro MicroSystems Inc. 3-Wire Digital Peak Detector A1468LK-W-T

The A1468 is a three-wire Hall-effect sensor IC designed for true zero-speed differential magnetic sensing in applications such as speedometers. It operates from a 4.0 to 26.5 V supply and requires a minimum differential magnetic field of 20 G pk-pk. The device features Automatic Gain Control and Automatic Offset Adjustment for air-gap-independent switching and continuous calibration. It is packaged in a 4-pin SIP with a maximum operating ambient temperature of 150°C and a maximum junction temperature of 165°C. Reverse battery protection and undervoltage lockout are included. Output duty cycle precision is within ±15% over the specified magnetic signal range, and the output frequency supports up to 10 kHz. The package is lead-free with matte-tin plating.