Bosch BMM350

The BMM350 is a triaxial magnetic sensor that operates in forced mode or normal mode. Its magnetic digital conversion technology is based on the tunnel magnetoresistance effect. The sensor is designed to meet all requirements of high-performance consumer applications such as magnetic compass, virtual reality, augmented reality and mixed reality applications, high-end gaming, as well as platform stabilization applications such as image stabilization, or indoor navigation and dead reckoning, for example in robotics applications. The evaluation circuit converts the output of the magnetic sensor sensing structures, which are developed, manufactured and tested in Bosch facilities. The corresponding chipset is housed in a single WLCSP package with dimensions of 1.28mm × 1.28mm × 0.5mm. To optimize system integration, the BMM350 is equipped with a digital interface and supports a wide VDDIO voltage range from 1.72V to 3.6V. To ensure performance and reliability, every device is tested and factory-calibrated. The BMM350 features excellent temperature characteristics with very low offset temperature coefficient and sensitivity temperature coefficient. An API is provided for rapid integration into target systems. The BMM350 is a standalone geomagnetic sensor for the consumer market, measuring magnetic fields on three orthogonal axes. Based on Bosch's proprietary tunnel magnetoresistance technology, the performance and characteristics of the BMM350 are precisely tuned to meet the demanding requirements of all triaxial mobile applications such as electronic compass, navigation, or augmented reality. The evaluation circuit converts the output of the geomagnetic sensor into digital results readable via I²C or I³C digital interface. The BMM350's package and interface are designed to accommodate a wide range of hardware requirements. Thanks to its ultra-compact footprint and low-profile package, it is ideally suited for mobile applications. The wafer-level chip-scale package measuring only 1.28mm × 1.28mm × 0.5mm ensures high flexibility in PCB layout. The BMM350 supports low-voltage operation and can be programmed to optimize functionality, performance, and power consumption for customer-specific applications. The BMM350 can sense all three axial components of the geomagnetic field in mobile phones, handheld devices, computer peripherals, human-machine interfaces, virtual reality features, and game controllers.

• 3-axis magnetic field sensor
• Ultra-small WLCSP, 9-pin, solder ball pitch 0.4mm, footprint 1.28mm×1.28mm, height 0.5mm
• Digital interface I²C, I³C, 1 interrupt pin, 1 pin for I²C/I³C address definition
• Low-voltage operation, VDD supply voltage range: 1.72V to 1.98V, VDDIO interface voltage range: 1.72V to 3.6V
• Flexible functionality, typical magnetic field range: ±2000μT, magnetic field resolution ~0.1μT
• On-chip interrupt controller for new data interrupt signal generation
• Ultra-low power consumption, low current draw, short wake-up time
• Normal and forced modes, periodic and triggered operation
• Operating temperature range -40℃ ~ +85℃
• RoHS compliant, halogen-free

• Magnetic heading information
• Electronic compass
• Gyroscope calibration
• Indoor navigation
• Gaming