DESCRIPTION

The MA732 detects the absolute angular

position of a permanent magnet, typically a

diametrically magnetized cylinder on a rotating

shaft. Fast data acquisition and processing

provide accurate angle measurements at

speeds from 0rpm to 60,000rpm. The digital

filtering is adjustable to optimize control loop

performance when used in servo applications.

The MA732 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 MA732 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

• 9-Bit to 14-Bit Resolution Absolute Angle

Encoder

• Contactless Sensing for Long Life

• SPI Serial Interface for Digital Angle

Readout and Chip Configuration

• Incremental 12-Bit ABZ Quadrature

Encoder Interface with Programmable

Pulses per Turn from 1 to 1024

• 14-Bit PWM Output

• Programmable Magnetic Field Strength

Detection for Diagnostic Checks

• 3.3V, 12mA Supply

• -40°C to +125°C Operating Temperature

• Available in a QFN-16 (3mmx3mm)

Package

APPLICATIONS

• General-Purpose Angle Measurements

• High-Resolution Angle Encoders

• Automotive Angle

• Robotics