MLX90393 Digital Hall Sensor Module

Post author:Farees Ahmed
Post published:November 14, 2020
Reading time:2 mins read

MLX90393 module is a powerful, versatile, ultra-small, universal 3D hall effect sensor module that can be easily fitted into any DIY projects where 3D position detection is required. It provides 44,000uT maximum full-scale resolution with a resolution rate of 0.161uT and requires only 100uA of current.

Compared with the size, it has a very powerful magnetic field sensing ability that can easily detect very small magnetic fields and provides the data via SPI and I2C protocols.

It works as a compass sensor but can also be used as a non-contact controller, linear actuator position sensor, or a flow meter with a magnetic impeller.

MLX90393 Digital Hall Sensor Pinout Configuration

Pin Number	Pin Name	Descriptions
1	CS	SPI Chip select
2	MISO	SPI MISO (Master IN Slave Out)
3	MOSI	SPI MOSI (Master Out Slave In)
4	SCLK	SPI Clock input
5	3.3V	3.3V Input
6	GND	Power supply ground
7	GND	Power supply ground
8	3.3V	3.3V Input
9	SDA	I2C serial data (SDA)
10	SCL	I2C serial clock (SCL)
11	INT	Interrupt Pin
12	TRIG	TRIGGER Pin

The pinout is shown in the below image-

Features and Specification of the MLX90393 Module

Operating Voltage: 2.2V-3.6V
Current Consumption: 100µA (Typ.)
Operating Temperature: -20°C – 85°C
Resolution: 0.161µT
Max Full Scale Resolution: 44,000µT
I²C Address: 0xC0
16-bit AD / high integrated digital, micro power consumption
I2C & SPI (10MHz) output mode
XYZT (can be selected first) three-dimensional absolute position output
Low-cost integrated design
Size: 26mm x 26.3mm x 5mm (L x W X H)

Interfacing Diagram

The interfacing is quite easy using an I2C bus. The MLX90393 IC can easily be interfaced with any microcontroller having an I2C interface. However, this IC can also be interfaced using SPI protocol.

If the targeted microcontroller does not use I2C pull up resistors, R1 and R2 can be added.