- Angular Position Sensors
Motor Commutation Angle Sensor with UVW Multi-Pole Pair Emulation
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The MagAlpha MA102 magnetic sensor is an all-in-one solution designed to replace Hall switches for commutation in brushless DC motors and to provide absolute angle position. Absolute position is provided in the form of an 8-bit direct digital angle on the SPI interface. 12-bit resolution UVW commutation signals are provided with emulation for 1 to 8 pole pair rotors.
The MA102 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 measurement at speeds from 0 to 60,000 rpm.
The MA102 supports a wide range of magnetic field strengths and spatial configurations. Both end-of-shaft and off-axis (side-shaft mounting) configurations are supported.
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Features & Benefits
- 12-Bit Repeatability of UVW Outputs
- Contactless Sensing for Long Life
- SPI Serial Interface for 8-Bit Angle Readout and Chip Configuration
- UVW Signals for Block Commutation with 1 to 8 Pole Pair Emulation Using a 2-Pole Magnet, Complement /UVW Signals Provided for Differential Signaling
- Programmable Magnetic Field Strength Detection for Diagnostic Checks
- Linearization for Side-Shaft Mounting
- 3.3V, 12mA Supply
- -40°C to +125°C Operating Temperature
- Available in a QFN-16 (3mmx3mm) Package
Active Part Numbers:
TBMA102-Q-LT-01A Evaluation Kit Long Evaluation Board for the MA102
The TBMA102-Q-LT-01A is the long evaluation board for the MA102 MagAlpha magnetic position sensor. The sensor is mounted on the edge of the board, and can therefore be used in both side-shaft and end-of-shaft configurations.
It requires the EVKT-MACOM communication kit and the Macom App Software to evaluate MagAlpha functionality and performance with the set-up, such as noise level, refresh rate, start-up time, and magnetic field dependence.
In addition to this long (LT) evaluation board, there is a round format (RD) version, in which the sensor is mounted in the center of the board for end-of-shaft configurations.
Round Evaluation Board for the MA102
Windows Desktop Application + Drivers for the MagAlpha Communication Kit.
MagAlpha Communication Kit to Connect to Sensor Test Boards (TMBA) and Rotary Knob Kit, Requires Macom App Software