BMA280

The BMA280 is an advanced, ultra-small, triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer electronics applications. Featuring 14 bit digital resolution, the BMA280 allows very low-noise measurement of accelerations in 3 perpendicular axes and thus senses tilt, motion, shock and vibration in cellular phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features and game controllers.

With its small footprint of only 2 mm x 2 mm the BMA280 is unique in the class of low-noise, 14 bit digital acceleration sensors. On top, the BMA280 integrates a multitude of features that facilitate its use especially in the area of motion detection applications, such as device orientation detection, gaming, HMI and menu browser control. Navigation and spirit level measurement applications are enabled by the 14 bit resolution. Featuring a full operation current consumption of only 130 μA the BMA280 is ideally suited for mobile consumer electronic devices. In low-power mode operation the current consumption can be even further reduced by more than one order of magnitude.

Applications

  • Spirit level
  • Navigation
  • Display profile switching (portrait/landscape, face-up/face-down switching)
  • Flat detection
  • Tap / double tap sensing
  • Menu scrolling, gaming
  • Advanced power management for mobile devices
  • Shock and free-fall detection
  • Step-counting
  • Tilt compensation for electronic compass
 
 

Parameter Technical data
Digital resolution 14 bit
Resolution
(in ±2g range)
0.244 mg
Measurement ranges
(programmable)
±2 g, ±4 g, ±8 g, ±16 g
Sensitivity
(calibrated)
±2 g: 4096 LSB/g
±4 g: 2048 LSB/g
±8 g: 1024 LSB/g
±16 g: 512 LSB/g
Zero-g offset
(typ., over life-time)
±50 mg
Noise density (typ.) 120 μg/√Hz
Bandwidths
(programmable)
500 Hz ... 8 Hz
Digital inputs/outputs SPI & I²C,
2x digital interrupts pins
Supply voltage (VDD) 1.62 … 3.6 V
I/0 supply voltage (VDDIO ) 1.2 … 3.6 V
Temperature range -40 … +85°C
Current consumption
(full operation)
130 μA (@ 2 kHz data rate)
Current consumption
(low-power mode)
6.5 μA (@ 40 Hz data rate)
FIFO data buffer 32 sample depth
(for each axis)
LGA package 2 x 2 x 0.95 mm³
Shock resistance 10,000 g x 200 μs
Interrupts
  • Data-ready (e. g. for processor synchronization)
  • Any-motion (slope) detection (e. g. for wake-up)
  • Tap sensing (e. g. for tap-sensitive UI control)
  • Orientation change recognition (e. g. for portrait/ landscape switching)
  • Flat detection (e. g. for position sensitive switching)
  • Low-g / high-g detection (e. g. for shock and freefall detection)
  • No-motion (e.g. for power saving)
 
 

Type of document Download
Flyer BST-BMA280-FL000-02
Datasheet BST-BMA280-DS000-10