High Precision, Low-g, Digital Z-Axis Accelerometer Data Sheet ADXL701 FEATURES GENERAL DESCRIPTION High performance, z-axis digital output accelerometer The ADXL701 device is a high precision, single z-axis 14.2 g full-scale range at 16-bit resolution (0.434 mg/LSB) accelerometer designed for vehicle rollover detection and other 2 kHz output sample rate with optional data FIFOs high performance applications. The ADXL701 provides offset Programmable filter response stability to better than 500 mg and sensitivity stability to better 20 Hz, 46 Hz, 92 Hz, 184 Hz than 5% across the entire temperature range. The ADXL701 is Continuous electromechanical self test designed with selectable 3 dB filter corner frequencies to Additional key-on and on demand self test routines satisfy a range of applications, and the 2 kHz output data rate Z-axis offset adjust allows sufficient oversampling of the acceleration information. Low quiescent current draw The acceleration data output from the device is a true 16-bit High linearity performance word and is contained in a 32-bit SPI transaction. The SPI Qualified for automotive applications interface contains additional fault detection bits and data 40C to +105C temperature range formatting bits designed to assist high reliability applications. APPLICATIONS SPI communications are compatible up to 8 MHz. The 16-bit acceleration data-word offers a resolution of 0.434 mg/LSB for Vehicle rollover detection the 14.2 g full-scale range of the device. Platform stabilization/leveling The ADXL701 is available in an SOIC package with an inverted paddle for improved EMI/RFI robustness. The ADXL701 operates at nominal power supplies of 3.3 V and 5 V, and is specified to operate across the full automotive temperature range of 40C to +105C. FUNCTIONAL BLOCK DIAGRAM IIR FILTER SCLK Z - THIRD-ORDER CALIBRATION FORMAT AFE MOD SINC FILTER BYPASS CS MOSI TEMP - THIRD-ORDER CAL COEFFICIENT IIR FILTER CALIBRATION FORMAT SENSOR MOD SINC FILTER GENERATION MISO SENSOR SELF DRIVERS TEST IOVDD DSP MASTER DSP CONTROL DVDD TIMING GEN STATE MACHINE REGISTER REGVDD VDD OTP MONITOR AVDD SERIAL VDD CLOCK ERROR NUMBER REG REGGND ERROR FLAGS CONFIG HANDLER IOGND TRIM POR ADXL701 COEFFICIENT REFERENCE VCM Figure 1. For more information about the ADXL701, please contact the Analog Devices, Inc., Customer Interaction Center at ADXL701 Data Sheet NOTES 2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. www.analog.com/ADXL701 D12411F-0-11/15(SpA) Rev. SpA Page 2 of 2