MA800 magnetic sensor

MA800


Angular Sensor for Turning Knob Applications, 8bit


The MagAlpha MA800 is a robust contactless angle encoder. The IC detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder attached to the rotor. The data acquisition and processing is extremely fast, allowing accurate angle measurement at speeds from 0 to 100’000 RPM.

The MA800 supports a wide range of magnetic field strengths and spatial configurations, which help to relax mechanical tolerances and simplify system design. Both end-of-shaft magnet and off axis magnet positioning (“side-shaft” mounting) topologies are supported. The ideal application of the MA800 is as a sensor for HMI like turning knobs with SPI digital out interface.

Features:

  • 8-Bit Resolution Absolute Angle Encoder
  • 500kHz Refresh Rate
  • Ultra-Low Latency: 3μs
  • Serial Interface for Data Readout and Settings
  • 8-Bit SPI Digital Output
  • Built-In Linearization for Side-Shaft Topologies
  • 3.3V, 7.7mA Supply
  • Available in a QFN-16 (3mmx3mm) Package

Applications:

  • HMI
  • Servo Drives
  • Robotics
  • Automotive
  • PSM/BLDC Motors
  • Encoders

Technical Data:

Part Unit MA800
Feature   SPI Digital out 
Effective angle resolution  bit 8
Magnetic field range  

30...150

Zero setting   x
SPI register configuration   x
Absolut angle on SPI bit 8
ABZ incremental   -
ABZ resolution ppr -
PWM output   -
PWM resolution bit -
Magnetic field detection   x
Push button functionality   x

Downloads:

Magnetic Angular Position Sensors Brochure (PDF)

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