AMR3001 Datasheet, PDF (1/4 Pages) American Electronic Components, inc – AMR Angle Sensor

AMR Angle Sensor
AMR3001
AMR3001 AMR Angle Sensor
Features and Benefits
 Anisotropy of magnetoresistance (AMR) Technology
 Compatible with Wide Range of Supply Voltages
 Wide Airgap Tolerance
 Excellent Thermal Stability
 Very Low Hysteresis
 Ultrasmall Package
Applications
 Rotary Position Sensors
 Rotary Encoders
 Contactless Potentiometers
 Valve Position Sensors
 Knob Position Sensors
General Description
The output voltage of the AMR3001 TMR angle sensor is proportional to the sine or cosine of the
angle of a magnetic field applied parallel to the surface of the sensor, which can be provided by a
small magnet positioned above the device. The AMR3001 includes two Wheatstone bridges, which
can be configured to output sine and cosine functions respectively. Each bridge includes four
TMR sensor elements in a push-pull arrangement to produce a best-in-class peak-to-peak signal as
large as 0.75% of the supply voltage. Additionally, the unique TMR Wheatstone bridge technology
accurately compensates the output against changes in ambient temperature. This sensor is
assembled in an ultra small SOP8 package
Operation
A small magnet, placed above the AMR3001, can be used to provide a magnetic field in any desired
orientation parallel to the plane of the AMR3001 package. The following chart show a typical
sensor output as a function of the angle of the applied magnetic field using a 6 mm diameter, 2.5
mm thick magnet and at 1 V supply.
Multidimension Technology co. Ltd.
www.dowaytech.com
Ver. A
No.7 Guangdong Road, Zhangjiagang Free Trade Zone, Jiangsu, 215634, P.R.China
1 of 4
MDT AMR3001