BMM350-OPTECH CO.,LIMITED

Model:BMM350

Model:BMM350
Manufacturer：Bosch Sensortec
Stocks：2000
Describe：

A 16-bit three-axis magnetometer based on tunnel magnetoresistance (TMR) technology, featuring a very small WLCSP package. This device is used to measure the magnetic field intensities in the X, Y, and Z directions, and has three core advantages: high precision, low noise, and ultra-low power consumption. Compared to traditional Hall sensors, its sensitivity is 100 times higher, and the noise is reduced by more than 70%. It incorporates a patented "field vibration recovery" function, which can effectively resist strong magnetic interference from external components such as speakers, providing stable and reliable measurement data. The measurement range is ±2mT, and it supports I2C and I3C digital interfaces, suitable for applications such as wearable devices, AR/VR, smartphones, indoor navigation, and industrial automation.

Features ：

• Core sensing technology: Utilizes high-performance TMR (Tunnel Magnetoresistance) technology. Compared to traditional Hall sensors, its sensitivity is increased by 100 times and noise is reduced by more than 70%.

• Ultra-low power consumption operation: Extremely low power consumption. At a 100Hz sampling rate (ODR), the typical operating current is only 200µA, making it suitable for battery-powered devices.

• High-precision measurement: 16-bit resolution, measurement range ±2mT, with extremely strong ability to detect weak magnetic fields

• Strong anti-interference capability: The patented "field vibration recovery" function enables rapid restoration after being subjected to strong magnetic shocks, ensuring data consistency.

• Wide operating temperature range: Industrial-grade temperature range of -40°C to +85°C, suitable for various environments

• Digital interface: Supports I2C and I3C interfaces, facilitating connection with mainstream MCUs.

• Ultra-small package: 9-WLCSP (1.28×1.28×0.5 mm), occupies a very small area on the board, suitable for product designs with limited space.

• Sample rate configurable: Supports multi-level adjustment of ODR from 1.56Hz to 400Hz, balancing power consumption and performance.

• Environmental compliance: Compliant with RoHS standards

Application：

• AR/VR and Head-Mounted Devices: Achieving Precise Head Pose Tracking and Directional Perception, Optimizing Immersive Audio and Visual Experiences

• Audio devices and consumer electronics: Headphones with motion detection, smartphone/tablet orientation and gesture recognition

• Indoor navigation and positioning: Integrated with inertial sensors, enabling continuous and precise positioning in indoor environments such as shopping malls and underground parking lots where GPS signals are weak or non-existent.

• Smart Home and Innovative Interaction: Achieving Non-contact Component Recognition (such as AI toys), Position Detection, and Sliding Interaction through the Use of Permanent Magnets

• Industry and Transportation: Speed sensing for electric two-wheelers, precise current monitoring in motors, and angle detection in industrial automation

• Medical and Research Applications: Due to its extremely low noise characteristics, it can meet the requirements for measuring ultra-weak magnetic fields in medical equipment.