نظرة عامة على المنتج
The BMA400 from Bosch Sensortec is an ultra-low power 3-axis digital accelerometer with 12-bit resolution. It features on-chip motion-triggered interrupt functions including step counter, activity recognition, orientation detection, and tap/double-tap, consuming only 14.5uA at highest performance and 800nA in auto-wakeup mode.
المواصفات الرئيسية
- Type: 3-Axis Digital Accelerometer
- Manufacturer: Bosch Sensortec
- Resolution: 12-bit
- Acceleration Range: +/-2g / +/-4g / +/-8g / +/-16g
- Output Data Rate: 12.5Hz to 800Hz
- Current Consumption: 14.5uA (high performance), 3.5uA (low power), 800nA (auto-wakeup)
- Noise Density: 180ug/sqrt(Hz) typical (high perf)
- Interface: SPI (3/4-wire) and I2C
- FIFO: 1KB on-chip
- Interrupt Pins: 2
- On-chip Features: Step counter (<4uA total), Activity recognition, Orientation, Tap/Double-tap
- Supply Voltage: 1.72V to 3.6V (VDDIO: 1.2V to 3.6V)
- Package: 12-pin LGA (2.0 x 2.0 x 0.95mm)
- Operating Temp: -40C to +85C
- RoHS: Compliant, Halogen-free
الميزات
- Ultra-low 14.5uA current at highest performance – 10x lower than competitors
- 800nA auto-wakeup mode for always-on sensing
- Built-in step counter consuming only 4uA total
- Activity recognition (walking, running, standing)
- 1KB FIFO reduces host MCU interrupts
- 12-bit resolution with +/-2g to +/-16g ranges
التطبيقات
- Wearable activity tracking
- Smart watch power management
- Fitness applications
- Drop detection for warranty logging
- IoT coin-cell powered devices
- Smart home window/door sensing