High Performance, Dual-Axis Digital Output Accelerometer ADXL288 Data Sheet FEATURES GENERAL DESCRIPTION ±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 The ADXL288 is a dual-axis accelerometer with signalconditioned 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. The ADXL288 is available in a 16-lead, narrow-body SOIC package with an exposed pad. The ADXL288 can operate at 3.3 V and 5 V and is specified for operation from −40°C to +105°C. APPLICATIONS Impact sensing Shock detection Σ-Δ MOD SINC3 + FIR FILTER –3dB AT 408Hz OFFSET/ SENSITIVITY CALIBRATION OFFSET CANCELLATION ARM_X ARM_Y INTERPOLATION AT 512kHz REGISTERS/MEMORY X-AXIS SENSOR DEMOD MUX AC AMP STATE MACHINE SENSOR DRIVERS MISO SPI INTERFACE SELFTEST ARMING PIN FUNCTIONALITY FUNCTIONAL BLOCK DIAGRAM MOSI SCLK + FIR FILTER –3dB AT 408Hz OFFSET CANCELLATION INTERPOLATION AT 512kHz DEVICE ID Y-AXIS SENSOR OTP MEMORY SENSOR DRIVERS TRIM CONFIGURATION TIMING GENERATOR VDD VREG GND EPAD 11204-001 DEMOD OFFSET/ SENSITIVITY CALIBRATION VOLTAGE REGULATOR AC AMP SINC3 MUX CS Σ-Δ MOD Figure 1. For more information about the ADXL288, please contact the Analog Devices, Inc., Customer Interaction Center at http://www.analog.com/en/content/technical_support_page/fca.html to connect with a technical support specialist. Rev. Sp0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADXL288 Data Sheet NOTES ©2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D11204F-0-1/13(Sp0) Rev. Sp0 | Page 2 of 2