The ADXL373 Accelerometer features two additional lower power modes with interrupt-driven, wake-up features for monitoring motion during periods of inactivity. In wake-up mode, acceleration data can be averaged to obtain a low enough output noise to trigger low g thresholds. In instant-on mode, the ADXL373 consumes 1.4μA while continuously monitoring the environment for impacts. When an impact event that exceeds the internally set threshold is detected, the device quickly switches to normal operating mode to record the event.
The ADXL373 includes a four-pole, low-pass antialiasing filter to attenuate out-of-band signals common in high g applications. The device also incorporates a high-pass filter to eliminate initial and slow-changing errors such as ambient temperature drift.
The ADXL373 provides 12-bit output data at 200mg/LSB scale factor. The user can access configuration and data registers via the serial peripheral interface (SPI) or I2C protocol.
The Analog Devices Inc. ADXL373 3-Axis MEMS Accelerometer is available in a 3.00mm × 3.25mm × 1.06mm Land Grid Array (LGA) package and features a wide -40°C to +105°C operating temperature range.