Product Details
●The ADXL363 is an ultralow power, three-sensor combination consisting of a 3-axis MEMS accelerometer, a temperature sensor, and an ADC input for synchronous conversion of an external signal. The entire system consumes less than 2 µA at a 100 Hz output data rate and 270 nA when in motion triggered wake-up mode.
●The ADXL363 communicates via a serial port interface (SPI) and always provides 12-bit output resolution for all three sensors.
●The ADXL363 accelerometer provides selectable measurement ranges of ±2 _g_, ±4 _g_, and ±8 _g_, with a resolution of 1 mg/LSB on the ±2 g range. Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL363 does not alias input signals by undersampling; it samples the full bandwidth of the sensor at all data rates.
●The ADXL363 temperature sensor operates with a scale factor of 0.065°C (typical). Acceleration and temperature data can be stored in a 512-sample multimode FIFO buffer, allowing up to 13 sec of data to be stored.
●In addition to the accelerometer and temperature sensor, the ADXL363 also provides access to an internal ADC for synchronous conversion of an additional analog input.
●The ADXL363 operates on a wide 1.6 V to 3.5 V supply range, and can interface, if necessary, to a host operating on a separate, lower supply voltage. The ADXL363 is available in a 3 mm × 3.25 mm × 1.06 mm package.
●Applications
● Home healthcare devices
● Wireless sensors
● Motion enabled metering devices
●### Features and Benefits
● Accelerometer, temperature sensor, and provision for 3rd analog sensor input
● All sensors sampled synchronously
●Up to 400 Hz output data rate (ODR)
●Samples can be synchronized to external trigger
● Ultralow power
●1.95 µA at 100 Hz ODR, 2.0 V supply, all sensors on
●270 nA at 6 Hz motion activated wake-up mode
●10 nA standby current
● 12-bit resolution for all sensors
●Acceleration scale factor down to 1 mg/LSB
●Temperature scale factor 0.065°C/LSB
● Built-in features for motion-based 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
● See datasheet for additional features
