GENERAL DESCRIPTION

The ADXL288 is a dual-axis accelerometer with signal conditioned outputs available via a 16-bit SPI interface. Identical, independent X and Y sense structures are implemented to create a high performance, high integrity acceleration sensing system. The X and Y acceleration channels have a nominal full-scale range of ±120 g and a bandwidth of 408 Hz. The acceleration data is provided as a 12-bit, twos complement word with a resolution of 62.5 mg/LSB.

FEATURES

±120 g full-scale range

  12-bit resolution at 62.5 mg/LSB

  512 kHz data interpolation rate

Sensor frequency response down to dc

On-demand electromechanical self-test

Fully differential circuitry for high resistance to EMI/RFI

 Independent x- and y-axis sense structures for robust FMEA performance

Independent x- and y-axis arming thresholds

Low noise: 1 LSB rms typical

Qualified for automotive applications

Temperature range: −40°C to +105°C

3.3 V and 5 V operation

APPLICATIONS

Impact sensing

Shock detection