ADI's ADXL362 is an ultralow power, 3-axis MEMS accelerometer that consumes less than 2 μA at a 100 Hz output data rate and 270 nA when in motion triggered wake-up mode. Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL362 does not alias input signals by undersampling; it samples the full bandwidth of the sensor at all data rates.
The ADXL362 provides 12-bit output resolution, and 8-bit formatted data provides for more efficient single-byte transfers when a lower resolution is sufficient. Measurement ranges of ±2 g, ±4 g, and ±8 g are available, with a resolution of 1 mg/LSB on the ±2 g range. For applications where a noise level lower than the normal 550 μg/√Hz of the ADXL362 is desired, either of two lower noise modes (down to 175 μg/√Hz typical) can be selected at minimal increase in supply current.
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- Built-in features for system-level power savings:
- Adjustable threshold sleep/wake modes for motion activation
- See data sheet for additional features
- Low noise down to 175 μg/√Hz
- Wide supply and I/O voltage ranges: 1.6 V to 3.5 V
- Operates off 1.8 V to 3.3 V rails
- Acceleration sample synchronization via external trigger
- Measurement ranges selectable via SPI command
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- Ultra-low power
- High resolution: 1 mg/LSB
- Power can be derived from a coin cell battery
- 1.8 μA at 100 Hz ODR, 2.0 V supply; 3.0 μA at 400 Hz ODR, 2.0 V supply
- 270 nA motion activated wake-up mode
- 10 nA standby current
- On-chip temperature sensor
- SPI digital interface
- Small, thin 3 mm x 3.25 mm x 1.06 mm package
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ADI's ADXL362 is an ultralow power, 3-axis MEMS accelerometer that consumes less than 2 μA at a 100 Hz output data rate and 270 nA when in motion triggered wake-up mode. Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL362 does not alias input signals by undersampling; it samples the full bandwidth of the sensor at all data rates.
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