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.

Features and Benefits

▪ Used in sensing motion of ring magnet or ferrous targets

▪ Integrated filter capacitor

▪ Wide operating temperature range

▪ Operation with magnetic input signal frequency from 20 Hz to 20 kHz

▪ Resistant to EMI

▪ Large effective air gaps

▪ 4.0 to 26.5 V supply operating range

▪ Output compatible with both TTL and CMOS logic families

▪ Reverse battery protection

▪ Resistant to mechanical and thermal stress

▪ Accurate true zero-crossing switchpoint