Datasheet ADXRS810 (Analog Devices)

High Performance, SPI Digital Output, Angular Rate Sensor Data Sheet ADXRS810 FEATURES GENERAL DESCRIPTION Excellent null offset stability over temperature
The ADXRS810 is an angular rate sensor (gyroscope) intended
High vibration rejection over a wide frequency range
for automotive navigation applications. An advanced, differential,
2000 g powered shock survivability
quad-sensor design rejects the influence of linear acceleration,
SPI digital output with 16-bit data-word
enabling the ADXRS810 to operate in exceedingly harsh
Low noise
environments where shock and vibration are present.
Continuous self-test
The ADXRS810 uses an internal, continuous self-test archi-
Fail-safe functions
tecture. The integrity of the electromechanical system is checked
Temperature sensor
by applying a high frequency electrostatic force to the sense
3.3 V and 5 V operation
structure to generate a rate signal that can be differentiated
−40°C to +105°C operation
from the baseband rate data and internally analyzed.
Small, low profile, industry standard SOIC package provides yaw rate (Z-axis) response
The ADXRS810 is capable of sensing an angular rate of up to
Qualified for automotive applications
±300°/sec. Angular rate data is presented as a 16-bit word, as part of a 32-bit SPI message.
APPLICATIONS
The ADXRS810 is available in a cavity plastic 16-lead SOIC and
Car navigation
is capable of operating across both a wide voltage range (3.3 V to 5 V) and temperature range (−40°C to 105°C).
FUNCTIONAL BLOCK DIAGRAM CP5 VX HIGH VOLTAGE P GENERATION DD ADXRS810 LDO REGULATOR DVDD HV DRIVE AVDD CLOCK ALU PHASE- DIVIDER LOCKED LOOP DECIMATION Y AMPLITUDE FILTER R DETECT O MOSI TEMPERATURE MEM BAND-PASS CALIBRATION S/ 12-BIT DEMOD SPI MISO FILTER INTERFACE ADC ER SCLK IST CS G FAULT E Q FILTER R Q DAQ DETECTION Z-AXIS ANGULAR RATE SENSOR DV ST SS P DAQ CONTROL PSS AVSS EEPROM
1 00 4- 03 1 1 Figure 1.
Rev. 0 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Absolute Maximum Ratings Thermal Resistance Rate Sensitive Axis ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Continuous Self-Test Applications Information Calibrated Performance Mechanical Considerations for Mounting Application Circuit ADXRS810 Signal Chain Timing SPI Communications Characteristics SPI Communication Protocol—Applications Device Data Latching Command/Response SPI Communication Protocol—Bit Definitions Command/Response Bit Descriptions ADXRS810 Fault Register Bit Definitions CHK Bit Assertion: Recommended Start-Up Routine SPI Rate Data Format ADXRS810 Memory Map Memory Register Definitions 0x00 RATE1, 0x01 RATE0 0x02 TEM1, 0x03 TEM0 0x04 LOCST1, 0x05 LOCST0 0x06 HICST1, 0x07 HICST0 0x08 QUAD1, 0x09 QUAD0 0x0A FAULT1, 0x0B FAULT0 0x0C PID1, 0x0D PID0 0x0E SN3, 0x0F SN2, 0x10 SN1, 0x11 SN0 Suggested PCB Layout Solder Profile Package Marking Codes Outline Dimensions Ordering Guide Automotive Products