Monolithic Power Systems (MPS) MA734 Contactless Angle Sensors
Monolithic Power Systems (MPS) MA734 Contactless Angle Sensors detect the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder on a rotating shaft. The MA734 features a fast data acquisition and processing that implements accurate angle measurements from static angle measurement to high-speed rotation. The adjustable digital filtering optimizes control loop performance when used in servo motor applications.
The MPS MA734 Contactless Angle Sensors support a wide range of magnetic field strengths and spatial configurations, including end-of-shaft and side-shaft (off-axis mounting) configurations. Configurable thresholds detected by the strength of the magnetic field allow the MA734 to be used for push-button human-machine interface (HMI) applications or diagnostic purposes.
The on-chip, non-volatile memory (NVM) delivers storage for configuration parameters, such as the reference zero-angle and magnetic field detection thresholds. Additionally, the MA734 is programmable with volatile registers without accessing the NVM.
The MA734 Sensors are offered in a QFN-16 (3mm x 3mm) package.
Features
- Programmable 8-Bit to 12.5-Bit resolution absolute angle encoder
- 3µs of Latency at a constant rotation speed
- SPI Serial interface for digital angle readout and chip configuration
- Programmable magnetic field strength detection for diagnostic checks
- NVM Read/Write command extends memory life
- 3.3V, 11mA Supply current
- -40°C to +125°C Operating temperature
- 0rpm to 60,000rpm Rotation
- Interrupt out when angle change is detected
- Available in a QFN-16 (3mm x 3mm) package
Applications
- General-purpose angle measurement
- High-resolution angle encoders
- Automotive position sensing
- Robotics
Associated Boards
Monolithic Power Systems (MPS) TBMA Test Boards for MagAlpha™ Sensors
In two versions, round (RD) & long (LT), allowing users to run & test MagAlpha sensors quickly.
Typical Application
Functional Block Diagram
