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A1425 Description

The A1425 AC-coupled Hall-effect sensor IC is a monolithic integrated circuit that switches in response to changing differential magnetic fields created by rotating ring magnets and, when coupled with a magnet, by ferrous targets. The device is a true zero-crossing detector: the output switches precisely when the difference in magnetic field strength between the two Hall elements is zero.

A1425 Key Features

  • Used in sensing motion of ring magnet or ferrous targets
  • Integrated filter capacitor
  • Wide operating temperature range
  • Operation with magnetic input signal frequency from
  • Resistant to EMI
  • Large effective air gaps
  • 4.0 to 26.5 V supply operating range
  • Output patible with both TTL and CMOS logic
  • Reverse battery protection
  • Resistant to mechanical and thermal stress