Acceleration sensor: BMA456
The triaxial BMA456 is an ultra-small, low-g high performance accelerometer for low-power, demanding consumer electronics applications. It senses wrist tilt, tab and double tab in wearable devices and facilitates accurate measurements over changing temperature.
High performance
Wearable features included
Thin package
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Technical data
Digital resolution
16 bit
Resolution
(in ±2g range)
(in ±2g range)
0.06 mg
Measurement ranges
(programmable)
(programmable)
±2 g, ±4 g, ±8 g, ±16 g
Sensitivity (calibrated)
±2 g: 16384 LSB/g
±4 g: 8192 LSB/g
±8 g: 4096 LSB/g
±16 g: 2048 LSB/g
±4 g: 8192 LSB/g
±8 g: 4096 LSB/g
±16 g: 2048 LSB/g
Zero-g offset (typ., over life-time)
±20 mg
Noise density (typ.)
120 µg/vHz
Bandwidths (programmable)
1600 Hz ... 1.5 Hz
Digital inputs/outputs
SPI & I2C,
2x digital interrupt pins
2x digital interrupt 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
- low-power mode
- full operation
- low-power mode
150 μA
14 μA typ. (at 50 Hz ODR)
14 μA typ. (at 50 Hz ODR)
FIFO data buffer
1 kB
LGA package
2 x 2 x 0.65 mm³
Shock resistance
10,000 g x 200 µs
