GENERAL DESCRIPTION
The 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.
FEATURES
Ultralow power
Power can be derived from 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
High resolution: 1 mg/LSB
Built-in features for system-level power savings:
Adjustable threshold sleep/wake modes for motion activation
Autonomous interrupt processing, without need for microcontroller intervention, to allow the rest of the system to be turned off completely
Deep embedded FIFO minimizes host processor load
Awake state output enables implementation of standalone, motion activated switch
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
On-chip temperature sensor
SPI digital interface
Measurement ranges selectable via SPI command
Small and thin 3 mm × 3.25 mm × 1.06 mm package
APPLICATIONS
Hearing aids
Home healthcare devices
Motion enabled power save switches
Wireless sensors
Motion enabled metering devices