BMA423
Accelerometer
The low-g acceleration sensor BMA423 is an ultra-small, triaxial accelerometer with digital interfaces, aiming for low-power consumer electronics applications. BMA423 is perfect for use cases such as advanced gesture recognition, activity recognition, activity tracking or advanced power management for mobile devices. The BMA423 senses wrist tilt, tap/double tap and enables plug ’n’ play step counting without an extra microcontroller. The accelerator can easily be used in modern, space-constrained wearables, such as fitness trackers, smartwatches and hearables.
Low power
Gesture recognition
Activity recognition
Step counting wrist optimized
Technical data
| Parameter | Technical data |
|---|---|
|
Parameter
Digital resolution
|
Technical data
12 bit
|
|
Parameter
Resolution
(in ±2g range) |
Technical data
0.98 mg
|
|
Parameter
Measurement ranges
(programmable) |
Technical data
±2 g, ±4 g, ±8 g, ±16 g
|
|
Parameter
Sensitivity (calibrated)
|
Technical data
±2 g: 1024 LSB/g
±4 g: 512 LSB/g ±8 g: 256 LSB/g ±16 g: 128 LSB/g |
|
Parameter
Zero-g offset (typ., over life-time)
|
Technical data
±80 mg
|
|
Parameter
Noise density (typ.)
|
Technical data
140 µg/vHz
|
|
Parameter
Bandwidths (programmable)
|
Technical data
1600 Hz ... 1.5 Hz
|
|
Parameter
Digital inputs/outputs
|
Technical data
SPI & I2C,
2x digital interrupt pins |
|
Parameter
Supply voltage (VDD)
|
Technical data
1.62 … 3.6 V
|
|
Parameter
I/0 supply voltage (VDDIO)
|
Technical data
1.2 … 3.6 V
|
|
Parameter
Temperature range
|
Technical data
-40 … +85°C
|
|
Parameter
Current consumption
- full operation - low-power mode |
Technical data
150 μA
13 μA (at 50Hz data rate) |
|
Parameter
FIFO data buffer
|
Technical data
1 kB
|
|
Parameter
LGA package
|
Technical data
2 x 2 x 0.95 mm³
|
|
Parameter
Shock resistance
|
Technical data
10,000 g x 200 µs
|
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Out of stock
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Out of stock
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Out of stock
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Out of stock
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