Description
The AMR132x is an omnipolar magnetic switch
integrated with anisotropic magnetoresistance (AMR)
magnetic sensor and CMOS circuitry, which is able
to detect the change of magnetic field and output
high and low voltage signals for high accuracy
position detection.
The AMR132x series switch can detect magnetic
fields from all directions in the plane, enabling 360°
sensing. It provides 100 Hz sampling frequency, 1 μA
power consumption, and a wide range of operating
voltages from 1.8 V to 5.5 V. It has excellent thermal
stability and immunity to stray field interference.

Features and Benefits
• Anisotropic magnetoresistance (AMR) technology
• Low power consumption at 1 μA
• Fast internal switching frequency at 100 Hz
• Omnipolar operation
• High sensitivity
• Wide range supply voltages: 1.8 V to 5.5V
• CMOS output
• Excellent temperature stability
• High tolerance to external magnetic field interference
• RoHS & REACH compliant

Applications
• Utility meters: water, gas, and heat meters
• Proximity switches
• Speed sensing
• Linear and rotary position sensing
• Wake up switches