ADIS16485

Data Sheet

Rev. 0 | Page 2 of 28

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Specifications .................................................................. 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Basic Operation................................................................................. 9

Register Structure ......................................................................... 9

SPI Communication................................................................... 10

Device Configuration ................................................................ 10

Reading Sensor Data.................................................................. 10

User Registers.................................................................................. 11

Output Data Registers.................................................................... 13

Inertial Sensor Data Format...................................................... 13

Rotation Rate (Gyroscope)........................................................ 13

Acceleration................................................................................. 14

Delta Angles ................................................................................ 14

Delta Velocity.............................................................................. 15

Internal Temperature ................................................................. 15

Status/Alarm Indicators............................................................. 16

Firmware Revision...................................................................... 16

Product Identification................................................................ 16

Digital Signal Processing ............................................................... 17

Gyroscopes/Accelerometers ..................................................... 17

Averaging/Decimation Filter .................................................... 17

FIR Filter Banks.......................................................................... 18

Calibration....................................................................................... 20

Gyroscopes.................................................................................. 20

Accelerometers ........................................................................... 21

Restoring Factory Calibration .................................................. 22

Point of Percussion Alignment................................................. 22

Alarms.............................................................................................. 23

Static Alarm Use......................................................................... 23

Dynamic Alarm Use .................................................................. 23

System Controls.............................................................................. 24

Global Commands ..................................................................... 24

Memory Management ............................................................... 24

General-Purpose I/O ................................................................. 25

Power Management.................................................................... 25

Applications Information .............................................................. 27

Prototype Interface Board......................................................... 27

Installation Tips.......................................................................... 27

PC Evaluation with EVAL-ADIS.............................................. 27

Outline Dimensions....................................................................... 28

Ordering Guide .......................................................................... 28

REVISION HISTORY

5/12—Revision 0: Initial Version