Monolithic Power Systems (MPS) MagAlpha™ MA782 Angle Sensor
Monolithic Power Systems (MPS) MagAlpha™ MA782 Angle Sensor detects the absolute angular position of a permanent magnet, such as a diametrically magnetized cylinder on a rotating shaft. The timing is controlled by an on-chip clock or via an external controller, and the flags detect a definable amount of angle change. The MA782 offers a power cycling ability, making it an ideal choice for applications that require low average power.
The MPS MagAlpha MA782 Angle Sensor supports a wide range of magnetic field strengths and spatial configurations, including both end-of-shaft and off-axis (side-shaft mounting). The MA782 features magnetic field strength detection with configurable thresholds to sense the magnet position relative to the sensor for specific functions (e.g., sensing the axial movements or diagnostics). The on-chip non-volatile memory (NVM) stores configuration parameters, including the reference zero angle position, the power cycling parameters, the filter window affecting the output resolution, and magnetic field detection thresholds.
The MA782 Angle Sensor is available in a QFN-14 (2mm x 2mm) package and has an operating temperature of -40°C to +125°C.
Features
- 8-Bit to 12-Bit Resolution absolute contactless angle encoder
- <0.5µA Current consumption in idle mode
- 10mA Current consumption in active mode
- Angle detection interrupt to wake the system
- Magnetic field strength alarm
- Supports on-axis and off-axis operation
- Serial Peripheral Interface (SPI)
- 3.3V Supply
- -40°C to +125°C Operating temperature
- Available in a QFN-14 (2mm x 2mm) package
Applications
- Portable devices
- Tablet foldable displays
- Mobile flip phones
- E-Bike shifters and throttle control
- Smart door locks
- Low-power rotary HMI dials or push buttons
Videos
Resources
Development Tools
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.
Related Products
Monolithic Power Systems (MPS) MagAlpha™ MA800 8-Bit Contactless Angle Sensor
Digital contactless angle sensor ideal for replacing analogic potentiometers or rotary switches.
Monolithic Power Systems (MPS) MagAlpha™ MA780 Low-Power Angle Sensor
Used to detect the absolute angular position of a permanent magnet.
Typical Application
