The device measures the static acceleration of gravity in tilt-sensing applications. The device also measures dynamic acceleration resulting from motion or shock. ADXL312’s high resolution of 2.9mg/LSB allows resolution of inclination changes of as little as 0.25°.
The ADXL312 accelerometer's embedded FIFO technology facilitates oversampling techniques to improve resolution to as little as 0.05° of inclination.
The ADXL312 accelerometer also offers special sensing functions. ADXL312’s activity and inactivity sensing detect the presence or absence of motion. The activity and inactivity sensing also detect if the acceleration on any axis exceeds a user-set level. Low-power modes allow intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
Qualified for automotive applications and operating across a −40 to +105°C temperature range, the ADXL312 3-axis accelerometer is well-suited for car alarm and black-box applications.