Tactical Grade, Six Degrees of Freedom Inertial Sensor Data Sheet ADIS16485 FEATURES GENERAL DESCRIPTION Triaxial, digital gyroscope, 450/sec dynamic range The ADIS16485 iSensor device is a complete inertial system that 0.05 orthogonal alignment error includes a triaxial gyroscope and a triaxial accelerometer. Each 6/hr in-run bias stability inertial sensor in the ADIS16485 combines industry-leading 0.3/hr angular random walk iMEMS technology with signal conditioning that optimizes 0.01% nonlinearity dynamic performance. The factory calibration characterizes Triaxial, digital accelerometer, 5 g each sensor for sensitivity, bias, alignment, and linear acceleration Triaxial, delta angle, and delta velocity outputs (gyroscope bias). As a result, each sensor has its own dynamic Fast start-up time, ~500 ms compensation formulas that provide accurate sensor measurements. Factory calibrated sensitivity, bias, and axial alignment The ADIS16485 provides a simple, cost-effective method for Calibration temperature range: 40C to +85C integrating accurate, multiaxis inertial sensing into industrial SPI-compatible serial interface systems, especially when compared with the complexity and Embedded temperature sensor investment associated with discrete designs. All necessary motion Programmable operation and control testing and calibration are part of the production process at the Automatic and manual bias correction controls factory, greatly reducing system integration time. Tight orthogonal 4 FIR filter banks, 120 configurable taps alignment simplifies inertial frame alignment in navigation systems. Digital I/O: data-ready alarm indicator, external clock The SPI and register structure provide a simple interface for Alarms for condition monitoring data collection and configuration control. Power-down/sleep mode for power management The ADIS16485 uses the same footprint and connector system Optional external sample clock input: up to 2.4 kHz as the ADIS16375 and the ADIS16488A, which greatly Single command self test simplifies the upgrade process. It comes in a module that is Single-supply operation: 3.0 V to 3.6 V approximately 47 mm 44 mm 14 mm and has a standard 2000 g shock survivability connector interface. Operating temperature range: 40C to +105C APPLICATIONS Platform stabilization and control Navigation Personnel tracking Instruments Robotics FUNCTIONAL BLOCK DIAGRAM DIO1 DIO2 DIO3 DIO4 RST VDD POWER SELF TEST I/O ALARMS GND MANAGEMENT TRIAXIAL OUTPUT CS GYRO DATA REGISTERS SCLK TRIAXIAL CALIBRATION ACCEL SPI CONTROLLER AND DIN FILTERS USER TEMP CONTROL DOUT REGISTERS VDD CLOCK ADIS16485 VDDRTC Figure 1. Rev. H 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20122019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 10666-001ADIS16485 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Product Identification ................................................................ 19 Applications ....................................................................................... 1 Digital Signal Processing ............................................................... 20 General Description ......................................................................... 1 Gyroscopes/Accelerometers ..................................................... 20 Functional Block Diagram .............................................................. 1 Averaging/Decimation Filter .................................................... 20 Revision History ............................................................................... 3 FIR Filter Banks .......................................................................... 21 Specifications ..................................................................................... 4 Calibration ....................................................................................... 23 Timing Specifications .................................................................. 6 Gyroscopes .................................................................................. 23 Absolute Maximum Ratings ............................................................ 8 Accelerometers ........................................................................... 24 ESD Caution .................................................................................. 8 Restoring Factory Calibration .................................................. 25 Pin Configuration and Function Descriptions ............................. 9 Point of Percussion Alignment ................................................. 25 Typical Performance Characteristics ........................................... 10 Alarms .............................................................................................. 26 Basic Operation ............................................................................... 11 Static Alarm Use ......................................................................... 26 Register Structure ....................................................................... 11 Dynamic Alarm Use .................................................................. 26 SPI Communication ................................................................... 12 System Controls .............................................................................. 27 Device Configuration ................................................................ 12 Global Commands ..................................................................... 27 Reading Sensor Data .................................................................. 12 Memory Management ............................................................... 27 User Registers .................................................................................. 13 General-Purpose I/O ................................................................. 28 Output Data Registers .................................................................... 16 Power Management ................................................................... 28 Inertial Sensor Data Format ...................................................... 16 Applications Information .............................................................. 30 Rotation Rate (Gyroscope) ........................................................ 16 Mounting Tips ............................................................................ 30 Acceleration ................................................................................. 17 Evaluation Tools ......................................................................... 31 Delta Angles ................................................................................ 17 Power Supply Considerations ................................................... 31 Delta Velocity .............................................................................. 18 X-Ray Sensitivity ........................................................................ 31 Internal Temperature ................................................................. 18 Outline Dimensions ....................................................................... 32 Status/Alarm Indicators ............................................................. 19 Ordering Guide .......................................................................... 32 Firmware Revision ..................................................................... 19 Rev. H Page 2 of 32