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. The ADXL362 always provides 12-bit output resolution; 8-bit formatted data is also provided 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. In addition to its ultralow power consumption， the ADXL362 has many features to enable true system level power reduction. It includes a deep multimode output FIFO， a built-in micropower temperature sensor， and several activity detection modes including adjustable threshold sleep and wake-up operation that can run as low as 270 nA at a 6 Hz （approximate） measurement rate. A pin output is provided to directly control an external switch when activity is detected， if desired. In addition， the ADXL362 has provisions for external control of sampling time and/or an external clock. The ADXL362 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 ADXL362 is available in a 3 mm × 3.25 mm × 1.06 mm package.