ADXL372 Datasheet | Analog Devices

FEATURES - ±200 g measurement range - 200 Hz to 3200 Hz user selectable bandwidth with 4-pole antia- liasing filter - Selectable oversampling ratio - Adjustable high-pass filter - Ultralow power - Power can be derived from a coin cell battery - 22 µA at 3200 Hz ODR, 2.5 V supply - Low power, wake-up mode for low g activity detection - 1.4 µA instant on mode with adjustable threshold - <0.1 µA standby mode - Built in features for system level power savings - Autonomous interrupt processing without processor interven- tion - Deep embedded FIFO to minimize host processor load - Ultralow power event monitoring detects impacts and wakes up fast enough to capture the transient events - Ability to capture and store peak acceleration values of events - Adjustable, low g threshold activity and inactivity detection - Wide supply range: 1.6 V to 3.5 V - Acceleration sample synchronization via external trigger - SPI digital interface and limited I2C interface format support - 12-bit output at 100 mg/LSB scale factor - Wide temperature range: - 40°C to +105°C - Small, thin, 3 mm × 3.25 mm × 1.06 mm package APPLICATIONS - Impact and shock detection - Asset health assessment - Portable Internet of Things (Io T) edge nodes - Concussion and head trauma detection FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION The ADXL372 is an ultralow power, 3-axis, ±200 g MEMS accelerometer that consumes 22 µA at a 3200 Hz output data rate (ODR). The ADXL372 does not power cycle its front end to achieve its low power operation and therefore does not run the risk of aliasing the output of the sensor. In addition to its ultralow power consumption, the ADXL372 has many features to enable impact detection while providing system level power reduction. The device includes a deep multimode output first in, first out (FIFO), several activity detection modes, and a method for capturing only the peak acceleration of over threshold events. Two additional lower power modes with interrupt driven, wake-up...