10-Bit, Digital, Contactless Angle Sensor with ABZ Incremental & PWM Outputs
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Product Description

The MA704 detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder on a rotating shaft. The MA704 is particularly suited to track highly dynamic movements with speeds up to 60’000 rpm.

The MA704 supports a wide range of magnetic field strengths and spatial configurations. Both end-of-shaft and off-axis (side-shaft mounting) configurations are supported.

The MA704 features magnetic field strength detection with programmable thresholds to allow sensing of the magnet position relative to the sensor for creation of functions such as the sensing of axial movements or for diagnostics.

On-chip non-volatile memory provides storage for configuration parameters, including the reference zero angle position, ABZ encoder settings, and magnetic field detection thresholds.

Product Features

  • 10-Bit Resolution Absolute Angle Encoder 
  • Contactless Sensing for Long Life 
  • SPI Serial Interface for Digital Angle Readout and Chip Configuration 
  • Incremental 8-Bit ABZ Quadrature Encoder Interface with Programmable Pulses Per Turn from 1-64
  • PWM Output 10-Bit
  • Programmable Magnetic Field Strength Detection for Diagnostic Checks
  • 3.3V, 12 mA Supply
  • -40°C to +125°C Operating Temperature 
  • Available in a QFN-16 (3mmx3mm) Package

Additional Resources

Sensor Brochure

TBMA User Guide

Magnetic Design Tool

MagAlpha Arduino Library

MagAlpha Sample Code

AppNote: Selecting the Right Magnet

AppNote: Sense BLDC Rotor Position

AppNote: Replace Optical Encoders


  • PackageQFN-16 (3x3)
  • Vin (min) (V)3
  • Vin (max) (V)3.6
  • PWM Frequency (Hz)920
  • fcutoff (Hz)2970
  • Latency (µs)8
  • Isupply (mA)11.7
  • tstart-up (ms)1.1
  • GradeCatalog
  • Refresh Rate (kHz)1000
  • Output FormatABZ, PWM, SPI, SSI
  • Resolution (bits)10
  • Sensor PositionEnd-of-Shaft, Side-Shaft
  • ABZ Pulses per Turn per Channel1 to 64
  • Temp Range (°C)-40 to +125
  • Magnetic Field (min) (mT)30

MagAlpha Communication Kit to Connect to Sensor Test Boards (TMBA) and Rotary Knob Kit, Requires Macom App Software 

The EVKT-MACOM is a communication kit for the MagAlpha magnetic position sensor family test boards (TBMA) and Rotary Knob kit (EVKT-KNOB). The kit contains a microcontroller motherboard, a collection of daughter boards adapted to different sensor boards, and the related cables.

This communicaiton kit requires Macom App Software and a sensor test board to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.

$75.00 + tax