Arcminaxis™ Hall 18-Bit Angular Encoder IC
MLX90384 Melexis
The MLX90384 is a high-precision magnetic position sensor for robotic joints. Featuring Arcminaxis™ technology, it comes with a magnet and software to calibrate and operate the system
Top features
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Resolution up to 18 bits
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Pitch-independent, one IC fits various magnets
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High speed with fast SPI interface
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Arcminaxis™ Technology combining Multi-axis sensing with Vernier Technology
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TSSOP-16 Sensor Package RoHS compliant
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Reduces the complexity and effort involved in assembling robotic joints
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Large air gap sensor to magnet (1.5 mm nominal)
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Generous magnet-sensor placement tolerance of ±0.5 mm
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Supply 3.3 V
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Temperature range -20°C to 85°C
Arcminaxis™ Hall 18-Bit Angular Encoder IC - MLX90384
Product description
The MLX90384 is a high-precision magnetic position sensor for robotic joints. Featuring Arcminaxis™ technology, it comes with as a four-component set:
1) a sensor chip with two monolithic magnetic position sensor ICs, each consisting of a Triaxis® Hall magnetic front end, analog-to-digital converter, hardware for high-speed signal conditioning, and a 10MHz high-speed SPI interface. The ICs are both configured to be sensitive to a first magnetic flux density component parallel to the chip and to a second component perpendicular to the chip.
2) a Vernier-type magnet, with two tracks of eight and seven pole pairs. The MLX90384 sensor chip measures the axial and tangential magnetic components of both tracks and transmits this information to a microcontroller which in turn generates the accurate angular position and speed as well as the counted turn out of this information.
3) a precompiled software package for an STM32 microcontroller to calibrate and operate the system.
4) a complete reference design to build your encoder solution based on 1), 2) and 3)
Application examples
- Absolute Rotary Position Sensor
- High Accuracy Encoder
- Robotic Joint Encoder
- E-Mobility
- Industrial Motors
Features and benefits
-
Resolution up to 18 bits
-
Pitch-independent, one IC fits various magnets
-
High speed with fast SPI interface
-
Arcminaxis™ Technology combining Multi-axis sensing with Vernier Technology
-
TSSOP-16 Sensor Package RoHS compliant
-
Reduces the complexity and effort involved in assembling robotic joints
-
Large air gap sensor to magnet (1.5 mm nominal)
-
Generous magnet-sensor placement tolerance of ±0.5 mm
-
-
Supply 3.3 V
-
Temperature range -20°C to 85°C
Documents and tools
Application flyer(s)
Datasheet(s)
Selection guide(s)
White paper(s)
Environmental
IC handling and assembly
Related tech talks
Videos
Arcminaxis™ Position Sensing Technology for Robotic Joints
Melexis announces Arcminaxis™, a groundbreaking magnetic technology addressing the growing demand for affordable, high-precision position sensing in robotic joints. The MLX90384 is the first product incorporating Arcminaxis™
