Accelerometer sensor: BMA253
The BMA253 is a low-g accelerometer with digital output for consumer applications. It allows measurements of acceleration in three perpendicular axes. Since the sensor features an ultra-small footprint and a flat package it is ingeniously suited for mobile applications.
- Ultra-small footprint
- Flat package
- Programmable for optimized functionality, performance and power consumption
Technical data
Digital resolution
12 bit
Resolution
(in ±2g range)
(in ±2g range)
0.98 mg
Measurement ranges
(programmable)
(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
±4 g: 512 LSB/g
±8 g: 256 LSB/g
±16 g: 128 LSB/g
Zero-g offset (typ., over life-time)
±80 mg
Noise density (typ.)
220 µg/√Hz
Bandwidths (programmable)
1000 Hz ... 8 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
130 µA (@ 2 kHz data rate)
6.5 µA (@ 40 Hz data rate)
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 free-fall detection)
- No-motion (e.g. for power saving)
