MagAlpha MA704

10-Bit, Digital, Contactless Angle Sensor

with ABZ Incremental & PWM Outputs

MA704 Rev. 1.0

www.MonolithicPower.com

1

9/27/2017

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© 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

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For

MPS green status, please visit the MPS website under Quality Assurance.

“MPS”

and “The Future of Analog IC Technology” are registered trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION