7Semi MMC5983MA 3-axis Mini Magnetometer Sensor Breakout Module

7Semi MMC5983MA 3-Axis Mini Magnetometer Sensor Breakout Module Technical Information

Overview

The 7Semi MMC5983MA is a high-precision 3-axis digital magnetometer designed for magnetic field detection and compass applications.

• Measures:

  • Magnetic field strength along X, Y, Z axes

   

• Output:

  • Digital I2C or SPI data

   

• Features:

  • Miniature footprint breakout module

  • High resolution and low noise

   

Suitable for navigation, orientation, robotics, and portable electronic devices.

Working Principle

Hall Effect / Magnetoresistive Sensing

• Uses magnetoresistive elements to sense the Earth fchanges in magnetic flux digital values

Operation Process

• Sensor detects magnetic flux density along three axes

• Onboard ADC converts analog signals digital data

• Microcontroller reads X, Y, Z magnetic field vectors via I2C or SPI

• Sensor internally compensates for temperature and offset

Measurement Characteristics

• Range: 1000 T (microtesla) typical

• Resolution: ~0.1 T

• Accuracy: 12 (depending on calibration and environment)

• Data rate: Configurable, e.g., 10100 Hz

Features

• 3-axis vector output for heading and orientation

• Supports tilt compensation when combined ws

  • Supply voltage: 1.8V3.6V

  • Current consumption: Low-power operation (A range in standby)

  • I2C address: 0x30 (default, configurable)

  • SPI interface: Supported for faster communication

  Output Interface

  I2C

  • SDA Data

  • SCL Clock

  SPI (optional)

  • Standard SPI pins for high-speed data

  Other pins

  • VCC Supply

  • GND Ground

  • Optional DRDY Data ready signal

  Internal Features

  High Resolution

  • Detects small changes in magnetic field (~0.1 T)

  Low Noise

  • Provides digital I2C/SPI output

  • Includes temperature compensation and low-noise design

  • Ideal for navigation, robotics, and orientation systems

  • Small form factor makes it suitable for space-constrained projects

  • Compact breakout for space-constrained applications

  Temperature Compensation

  • Onboard circuits correct offset and drift due to temperature

  Operating Behavior

  Real-Time Magnetic Field Measurement

  • Continuous 3-axis vector output

  Heading Calculation

  • Can be used with software to compute compass heading

  Tilt Compensation

  • Works best when paired with accelerometer data for accurate orientation

  Environmental Characteristics

  • Operating temperature: 40C to +85C

  • Resistant to moderate vibrations and shocks

  Limitations

  • Sensitive to magnetic interference for accurate heading

  • Cannot detect absolute position (needs combination with GPS or other sensors)

  Typical Pin Configuration

  • VCC Power supply

  • GND Ground

  • SDA I2C data

  • SCL I2C clock

  • Optional: CS, SDO, DRDY for SPI and interrupt signals

  Functional Role

  The module acts as a:

  • 3-axis magnetometer sensor

  • Electronic compass

  • Orientation and navigation aid

  • Magnetic field detection module

  Summary

  The 7Semi MMC5983MA Mini Breakout Module is a compact, high-precision 3-axis digital magnetometer

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