The MMC3140MR is a compact, high-performance 3-axis magnetic sensor from Memsic Inc. It accurately measures magnetic fields in three dimensions. This sensor is designed for applications requiring precise orientation and motion tracking in various environments. It communicates via I2C and offers low power consumption.

Applications:

• Navigation Systems
• Motion Tracking
• Electronic Compasses
• Augmented Reality
• Gaming and Virtual Reality

Features:

• 3-Axis Magnetic Field Sensing
• High Accuracy and Resolution
• Low Power Consumption
• Small Form Factor
• I2C Digital Interface

Benefits:

• Precise Orientation: Enables accurate heading and orientation determination.
• Low Power: Extends battery life in portable devices.
• Easy Integration: Simple I2C interface for easy communication with microcontrollers.
• Robust Performance: Reliable operation in various environmental conditions.

Specifications:

The MMC3140MR operates on a voltage range of 2.1V to 3.6V. It measures magnetic fields up to ±16 Gauss. The resolution is typically in the milli-Gauss range, providing high sensitivity to changes in magnetic field. It supports I2C communication up to 400 kHz. The power consumption is typically less than 1mA. Consult the datasheet for full specifications including sensitivity, noise, temperature drift, and calibration procedures.

Calibration is recommended to compensate for hard-iron and soft-iron effects. The datasheet provides guidelines for performing calibration routines. Shielding may be necessary in environments with strong external magnetic fields.