Bosch BMA423 Digital Triaxial Acceleration Sensors are designed for motion and fitness tracking in wearables. These MEMS sensors offer ease of integration in a compact 2mm x 2mm package with a low height of 0.95mm. The acceleration sensors include an optimized step counter for wearables integrated directly in the sensor, with no additional external microcontroller required. Bosch Sensortec BMA423 sensors provide 12-bit resolution, only 220μg/√Hz noise, and a total offset over its lifetime of only ±80mg. Temperature Coefficient of Offset (TCO) is ±0.3mg/K, ensuring activity tracking remains accurate under all conditions.
Features
12-bit resolution12-pin LGA packageCompact, 2mm (L) x 2mm (W) x 0.95mm (H)Ultra-low power consumption during operation and data acquisitionAcceleration ranges: ±2g/±4g/±8g/±16gOn-chip interrupt features:
Optimized pedometerRunning / walking / still detectorTilt-on-wrist detectionTap/double tap interruptAny/no-motion interruptNoise density output:
140μg/√HzTotal offset over lifetime:
±80mg
Applications
Wearables
Motion & fitness trackingMobile phonesE-compass tilt compensationNo-button UI devicesPortable devices
