Melexis Arcminaxis© MLX90384 Sensors
Melexis Arcminaxis© MLX90384 Sensors comprise a four-component set for a high-accuracy magnetic encoder solution. The first component, a sensor chip with two monolithic magnetic position sensor ICs, each incorporates a Triaxis® Hall magnetic front end, an analog-to-digital converter, hardware for high-speed signal conditioning, and a 10MHz high-speed SPI interface. The ICs are formatted to be sensitive to a first magnetic flux density component parallel to the chip plane and a second component perpendicular to the chip. The second component is a Vernier-type magnet with two tracks of eight and seven pole pairs. The MLX90384 sensor chip measures both tracks' axial and tangential magnetic components. It transmits this information to a microcontroller, which generates the accurate angular position and speed, and the counted turnout of this information. The third part is a precompiled software package for an STM32.
The Melexis MLX90384 magnet used in the MLX90384 encoder system is a Vernier-type magnet with two tracks. It is made of ferrite material with a temperature coefficient of about -2000ppm/K for the magnetic field strength.
Melexis offers the magnet in the following two versions:
• MLXMAGNT-VER-001-TR Magnet ring set to be mounted into a holder (maximum flexibility)
• MLXMAGNT-VER-002-TR Overmolded magnet with brass bushing for direct mounting on a ∅6mm shaft
Features
- Arcminaxis technology combines multi-axis sensing with Vernier technology
- Reduces the complexity and effort involved in assembling robotic joints
- Pitch-independent, one IC fits various magnets
- Large air gap sensor to a magnet (1.5mm nominal)
- Resolution up to 18-bits
- Generous magnet-sensor placement tolerance of ±0.5mm
- Triaxis hall technology
- Communication via a fast SPI interface
- TSSOP-16 sensor package RoHS compliant
- 3.3V supply
- Temperature range of -20°C to +85°C
Applications
- Absolute rotary position sensor
- High-accuracy encoder
- Robotic joint encoder
- E-mobility
- Industrial motors
Videos
Evaluation Kits
Melexis Arcminaxis™ MLX90384 Evaluation Kits
Based on the MLX90384 reference design & developed to simplify exploration of Arcminaxis technology.
Related Applications
Melexis IC Solutions for Robotics
Designed to enhance efficiency, precision, and adaptability in Robotics applications.