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8-Bit, Digital, Contactless Angle Sensor with Push Button Function
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The MagAlpha MA800 is a simple-to-use, digital, magnetic sensor designed to replace analogic potentiometers or rotary switches. The sensor detects the absolute angular position of a permanent magnet attached to a rotating shaft.
Since the measurement is spatially confined, the user has flexibility in terms of magnet shapes and configurations. Typically, the MA800 is used with a diametrically magnetized cylinder of 3mm to 8mm in diameter.
The MA800 features programmable magnetic field strength thresholds which allow implementation of a push button function. These are readable via the register bits and also as output signals.
On-chip non-volatile memory provides storage for configuration parameters including the reference zero angle position and the magnetic field detection thresholds.
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Features & Benefits
- 8-Bit Resolution Absolute Angle Encoder
- Contactless Sensing for Long Life with No Wear
- SPI and SSI Serial Interface for Digital Angle Readout and Chip Configuration
- Programmable Magnetic Field Strength Detection for Push Button Press Detection
- 3.3V, 11mA Supply
- -40 to +125°C Operating Temperature
- Available in a QFN-16 (3mmx3mm) Package
EVKT800-KNOB-Q-01A Evaluation Kit Rotary Knob Eval Kit for the Angular Sensing and Push-Button Features of MagAlpha Sensors
The EVKT-KNOB kit evaluates the angular sensing and push-button features of the MA800. It is delivered assembled and with a knob and magnet. The sensor is mounted in an end-of-shaft configuration.
It requires the communications kit (EVKT-MACOM) and the Macom App Software (see below) to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.
Long Eval Board for MA800
Round Eval Board for MA800
Windows Desktop Application + Drivers for the MagAlpha Communication Kit.