The MLX90333 is a Triaxis? position sensor that senses any magnet moving around it by measuring and processing the three spatial components of the flux density vector (ie Bx, By, and Bz).
The horizontal components (Bx and By) can be sensed by the Magnetic Collector (IMC), while the vertical component (Bz) can be sensed by a conventional Hall plate.
The MLX90333 has a 3D magnetometer mode in which 3D information on flux density can be output via SPI.
The MLX90333 also features a non-contact position sensor mode for rotary position sensors (through-axis magnets) linear travel position sensors (magnet displacement parallel to the device surface) and 3D/"joystick" position sensors.
The processed position information will eventually be reported in the form of a proportional analog output or PWM (Pulse Width Modulation) signal. In 3D/“joystick” mode, the device has 2 independent outputs. The 3-pin SPI (serial interface) mode can also be used to transfer location information to the host controller. The output transfer characteristics are fully programmable (eg, offset, gain, clamp level, linearity, thermal drift, filtering, range...) so that any specified requirements can be met by end-of-line calibration.
Suitable for absolute position sensors, rotary (through shaft), linear travel, 3D/"joystick"
Parameters:
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Working voltage: 4.5V-5.5V
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3D Magnetometer Mode (SPI)
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Ambient temperature range: -40°C - +85°C
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Main clock frequency: fast mode 20MHz, slow mode 7MHz
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Sampling rate: fast mode 200us, slow mode 600us
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Single output (rotary/linear) and dual output (3D/"joystick")
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Optional output modes: analog (proportional), PWM and serial protocol (SPI) 16 bits
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Analog input ADC accuracy: fast mode 14 bit, slow mode 15 bit
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PWM output frequency: 100-1000Hz, PWM output accuracy 12 bits 0.025%DC/LSB
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12-bit angular resolution, 10-digit angular accuracy, 40-digit ID number
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Magnetic flux density: Bx and By: 20-70mT, Bz: 24-140mT
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Internal 16-bit RISC DSP: 256B-RAM, 10KB-ROM, 128B-EEPROM, 5MIPS at 20MHz
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Magnetic temperature coefficient: -2400 ~ 0 ppm / °C
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Wire break diagnosis (Vdd open circuit, Vss open circuit)
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On-chip diagnosis
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Overvoltage protection, undervoltage detection
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Module size 28.5mm*22.1*3.3mm with two M3 mounting holes
