BMA355

The BMA355 is an advanced, ultra-small, triaxial, low-g acceleration sensor with digital interfaces in a wafer level chip scale package (WLCSP), aiming for highly integrated low-power consumer electronics applications. Featuring 12 bit digital resolution, the BMA355 allows very low-noise measurement of accelerations in 3 perpendicular axes and thus senses tilt, motion, shock and vibration in smartphones, tablets, computer peripherals, human-machine interfaces, augmented reality devices, ubiquitous sensor networks, hearing aids and game controllers.

Applications

  • Display profile switching (portrait/landscape, faceup/ face-down switching)
  • Flat detection
  • Tap/double tap sensing
  • Gaming
  • Advanced power management for mobile devices
  • Shock and free-fall detection
  • Step-counting
  • Tilt compensation for electronic compass
 
 
Paramter Technical data
Digital resolution 12 bit
Resolution
(in ±2g range)		 0.98 mg
Measurement ranges
(programmable)		 ±2 g, ±4 g, ±8 g, ±16 g
Sensitivity
(calibrated)		 ±2 g: 1024 LSB/g
±4 g: 512 LSB/g
±8 g: 256 LSB/g
±16 g: 128 LSB/g
Zero-g offset
(typ., over life-time)		 ±60 mg
Noise density (typ.) 150 μg/√Hz
Bandwidths
(programmable)		 1000 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 1.2 x 1.5 x 0.8 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-BMA355-FL000-00
Datasheet