ADXL700 High Precision, Low-g, Digital Triaxial Accelerometer

The ADXL700 device is a high precision, triaxial accelerometer designed for electronic stability control and other high perfor-mance applications. A built in temperature compensation routine ensures sensitivity stability to better than ±3% across the entire temperature range. The ADXL700 is designed with selectable −3 dB filter corner frequencies to satisfy a range of applications, and the 2 kHz output data rate allows sufficient oversampling of the acceleration information.

The acceleration data output from the device is a true 16-bit word and is contained in a 32-bit SPI transaction. The SPI interface contains additional fault detection bits and data formatting bits designed to assist high reliability applications. SPI communications are compatible up to 8 MHz. The 16-bit acceleration data-word offers a resolution of 0.434 mg/LSB for the ±14.2 g full-scale range of the device.

Applications

Vehicle dynamic control (VDC)
Electronic stability program (ESP)
Electronic chassis control
Platform stabilization/leveling

Features and Benefits

High performance, triaxial digital output accelerometer
±14.2 g full-scale range at 16-bit resolution (0.434 mg/LSB)
2 kHz output sample rate with optional data FIFOs
Programmable filter response
20 Hz, 46 Hz, 92 Hz, 184 Hz
Continuous electromechanical self-test
Additional key-on and on demand self-test routines