ADXL312ACPZ

The ADXL312 series low power, 3-axis Accelerometer with high resolution (13-bit) measurement up to ±12 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a serial port interface (SPI) (3- or 4-wire) or I²C digital interface. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (2.9mg/LSB) enables resolution of inclination changes of as little as 0.25°. A built-in FIFO facilitates using oversampling techniques to improve resolution to as little as 0.05° of inclination. Several special sensing functions are provided. Activity and inactivity sensing detects the presence or absence of motion and whether the acceleration on any axis exceeds user-set level. An integrated 32 level FIFO can be used to store data to minimize host processor intervention.

• Ultra-low power - 57µA in measurement mode and 0.1µA in standby mode at VS = 3.3V (typical)
• Power consumption scales automatically with bandwidth
• User-selectable resolution
• Full resolution, where resolution increases with g range, up to 13-bit resolution at ±12g
• Flexible interrupt modes mappable to either interrupt pin
• Measurement ranges selectable via serial command
• Bandwidth selectable via serial command
• 10000g Shock survival