This part is a kind of semiconductor called A1469.

Function of this product has Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC.

Manufacturers : Allegro

Image and pinout :

Some of the text within the PDF file :

A1469 Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibration FEATURES AND BENEFITS • Unique design for robustness against high power EMC transients • Peak detection based switching algorithm for large operating air gaps • Minimum differential field 20 Gpk-pk • Running mode calibration for continuous optimization • Precise duty cycle signal throughout operating temperature range • Automatic Gain Control (AGC) for air-gap–independent switchpoints • Automatic Offset Adjustment (AOA) for signal processing optimization • True zero-speed operation • Scan and IDDQ for increased test coverage PACKAGE: 4-pin SIP (suffix K) Not to scale DESCRIPTION TheA1469 is an optimized Hall effect sensing IC that provides a user-friendly sol [ ... ]

A1469 PDF Datasheet Download