±16g Triple Axis Accelerometer Breakout Board (ADXL345)

• Supply voltage: 2.0-3.6VDC
• Wide temperature range: -40°C to +85°C
• SPI and I2C interfaces
• RoHS Compliant

This is the SFE ±16g Triple Axis Accelerometer Breakout Board (ADXL345) for the Analog Device ADXL345. The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. The digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3 or 4-wire) or I2C digital interface. The ADXL345 is well suited to measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0°.

Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. The tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent pending 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor intervention. Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.

Features:
• 2.0-3.6VDC supply voltage
• Ultra low power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
• Tap/Double tap detection
• Free-fall detection
• SPI and I2C interfaces