The BMM350 is a 3-axis magnetic sensor which operates in automatic mode or triggered mode.
The magnetic-to-digital conversion technology is based on TMR (tunnel magneto resistance).

The BMM350 is designed to meet all requirements for high performance consumer applications such as magnetic compass, virtual, augmented and mixed reality applications and high-end gaming, platform stabilization applications such as image stabilization, or indoor navigation and dead-reckoning, for example in robotics applications.

Evaluation circuitry converts the output of the magnetic transducer sensing structures, developed, produced and tested in BOSCH facilities. The corresponding chip-sets are packed into one single WLCSP 1.28mm x 1.28mm x 0.5mm housing. For optimum system integration the BMM350 is fitted with digital interfaces (I2C, I3C), offering a wide VDDIO voltage range from 1.72V to 3.6V. To provide maximum performance and reliability each device is tested and ready-to-use calibrated.

The BMM350 has an excellent temperature behaviour with an outstanding low temperature coefficients of the offset (TCO) and of the sensitivity (TCS).

An API is provided for quick integration into the target system.

Key features

Three-axis magnetic field sensor

Ultra-Small package

Wafer Level Chip Scale Package
(9 pins, 0.4mm ball pitch)
footprint 1.28×1.28 mm21.28×1.28mm2, height 0.5 mm

Digital interface

I2C, I3C, 1 interrupt pin, 1 pin for I2C/I3C (legacy) address definition

Low voltage operation

VDDVDD​ supply voltage range: 1.72 V1.72V to 1.98 V1.98V

VDDIOVDDIO​ interface voltage range: 1.72 V1.72V to 3.6 V3.6V

Flexible functionality

Magnetic field range typical:
±2000 μT±2000μT (x, y-axis), ±2000 μT±2000μT (z-axis)

Magnetic field resolution of ∼0.1 μT∼0.1μT

On-chip interrupt controller

Interrupt-signal generation for new data

Ultra-low power

Typical applications

Magnetic heading information

Tilt-compensated electronic compass for map rotation, navigation and augmented reality

Gyroscope calibration in 9-DoF applications for mobile devices

In-door navigation, e.g. step counting in combination with accelerometer

Gaming (AR/VR)