MagAlpha MA704
10-Bit, Digital, Contactless Angle Sensor
with ABZ Incremental & PWM Outputs
MA704 Rev. 1.0 www.MonolithicPower.com 1
9/27/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
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.
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
APPLICATIONS
General Purpose Angle Measurement
Angle Encoders
Automotive Angle or Speed Sensors
Robotics
