Datasheet ADXL700 (Analog Devices)

High Precision, Low-g , Digital Triaxial Accelerometer Data Sheet ADXL700 FEATURES GENERAL DESCRIPTION High performance, triaxial digital output accelerometer
The ADXL700 device is a high precision, triaxial accelerometer
±14.2 g full-scale range at 16-bit resolution (0.434 mg /LSB)
designed for electronic stability control and other high perfor-
2 kHz output sample rate with optional data FIFOs
mance applications. A built in temperature compensation routine
Programmable filter response
ensures sensitivity stability to better than ±3% across the entire
20 Hz, 46 Hz, 92 Hz, 184 Hz
temperature range. The ADXL700 is designed with selectable
Continuous electromechanical self-test
−3 dB filter corner frequencies to satisfy a range of applications,
Additional key-on and on demand self-test routines
and the 2 kHz output data rate al ows sufficient oversampling of
Temperature compensated, high precision zero-g bias and
the acceleration information.
sensitivity performance
The acceleration data output from the device is a true 16-bit
X-/Y-/Z-axis offset adjust
word and is contained in a 32-bit SPI transaction. The SPI
Low quiescent current draw
interface contains additional fault detection bits and data
High linearity performance
formatting bits designed to assist high reliability applications.
−40°C to +105°C temperature range
SPI communications are compatible up to 8 MHz. The 16-bit
Qualified for automotive applications
acceleration data-word offers a resolution of 0.434 mg/LSB for
APPLICATIONS
the ±14.2 g full-scale range of the device.
Vehicle dynamic control (VDC)
The ADXL700 is available in an SOIC package with an inverted
Electronic stability program (ESP)
paddle for improved EMI/RFI robustness. The ADXL700 operates
Electronic chassis control
at both 3.3 V and 5 V, and is specified to operate across the full
Platform stabilization/leveling
automotive temperature range of −40°C to +105°C.
FUNCTIONAL BLOCK DIAGRAM IIR FILTER Σ-Δ THIRD-ORDER CALIBRATION FORMAT MOD SINC FILTER BYPASS X/Y AFE IIR FILTER Σ-Δ THIRD-ORDER CALIBRATION FORMAT MOD SINC FILTER BYPASS SCLK IIR FILTER Z CS Σ-Δ THIRD-ORDER CALIBRATION FORMAT AFE MOD SINC FILTER BYPASS ACE MOSI RF E NT MISO TEMP Σ-Δ THIRD-ORDER IIR FILTER CALIBRATION CAL COEFFICIENT FORMAT I I SENSOR MOD SINC FILTER GENERATION P S SENSOR SELF DRIVERS TEST IOVDD DSP MASTER DSP CONTROL DVDD TIMING GEN STATE MACHINE REGISTER VDD REGVDD OTP MONITOR SERIAL AVDD VDD CLOCK ERROR ERROR NUMBER REG REGGND FLAGS HANDLER CONFIG IOGND POR TRIM ADXL700 COEFFICIENT REFERENCE VCM
001 13199- Figure 1. For more information about the ADXL700, 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.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM NOTES