Six Degrees of Freedom Inertial Sensor

Data Sheet

ADIS16486

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 license is granted by implication or otherwise under any patent or patent rights of Analog

Devices. Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support www.analog.com

FEATURES

Triaxial digital gyroscope, ±450°/sec dynamic range

(minimum)

±0.018° axis to axis misalignment error (typical)

5.3°/hr in-run bias stability (typical)

0.25°/√hr angular random walk (typical)

0.01% FS nonlinearity

Triaxial digital accelerometer, ±18 g dynamic range

(minimum)

Triaxial, delta angle, and delta velocity outputs

Factory calibrated sensitivity, bias, and axial alignment

Calibration temperature range: −40°C to +85°C

SPI compatible

Programmable operation and control

Automatic and manual bias correction controls

4 FIR filter banks, 120 configurable taps

Digital input and output: data ready alarm indicator,

external clock

Alarms for condition monitoring

Power-down and sleep mode for power management

Optional external sync input clock: 2.4 kHz (maximum)

Continuous self test of inertial sensors

On demand self test of inertial sensors

Continuous CRC-based memory testing

Single VDD power supply operation: 3.0 V to 3.6 V

2000 g mechanical shock survivability

Operating temperature range: −40°C to +105°C

APPLICATIONS

Attitude and heading reference systems

Platform stabilization and control

Unmanned vehicle navigation

Robotics and instrumentation

GENERAL DESCRIPTION

The ADIS16486 is a complete inertial system that includes a triaxis

gyroscope and a triaxis accelerometer. Each inertial sensor in the

ADIS16486 combines industry leading iMEMS® technology with

signal conditioning that optimizes dynamic performance. The

factory calibration characterizes each sensor for sensitivity, bias,

alignment, and linear acceleration (gyroscope bias). Therefore,

each sensor has dynamic compensation formulas that provide

accurate sensor measurements.

The ADIS16486 provides a simple, cost effective method for

integrating accurate, multiaxis inertial sensing into industrial

systems, especially when compared with the complexity and

investment associated with discrete designs. All necessary motion

testing and calibration are part of the production process at the

factory, which reduces system integration time. Tight orthogonal

alignment simplifies inertial frame alignment in navigation

systems. The serial peripheral interface (SPI) and register structure

provide a simple interface for data collection and configuration

control. Parylene coating of all internal circuitry provides a

protective barrier against moisture exposure.

The ADIS16486 uses the same footprint and connector system as

the ADIS16480, ADIS16485, ADIS16487, and ADIS16488A, which

greatly simplifies the upgrade process. The ADIS16486 is packaged

in a module that is approximately 47 mm × 44 mm × 14 mm with

a 24-lead standard connector interface.

FUNCTIONAL BLOCK DIAGRAM

CONTROLLER

CLOCK

TRIAXIAL

GYROSCOPE

TRIAXIAL

ACCELEROMETER

POWER

MANAGEMENT

SCLK

DIN

DOUT

GND

VDD

TEMPERATURE

VDD

DIO1

DIO2 DIO3

DIO4

VDDRTC

RST

SPI

SELF T EST I/O ALARMS

OUTPUT

DATA

REGISTERS

USER

CONTROL

REGISTERS

CALIBRATION

AND

FILTERS

ADIS16486

23373-001

Figure 1.

ADIS16486 Data Sheet

Rev. 0 | Page 2 of 38

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 ....................................................... 7

Thermal Resistance ...................................................................... 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions ............................ 8

Typical Performance Characteristics ............................................. 9

Theory of Operation ...................................................................... 10

Introduction ................................................................................ 10

SPI Communication .................................................................. 11

Device Configuration ................................................................ 11

Reading Sensor Data .................................................................. 11

User Register Memory Map .......................................................... 12

User Register Definitions .............................................................. 15

Gyroscope Data .......................................................................... 16

Acceleration Data ....................................................................... 17

Delta Angles ................................................................................ 18

Delta Velocity ............................................................................. 20

Real-Time Clock (RTC) ............................................................ 21

Calibration .................................................................................. 23

FIR Filters .................................................................................... 34

Applications Information ............................................................. 36

Mounting Best Practices ........................................................... 36

Evaluation Tools ......................................................................... 37

Power Supply Considerations .................................................. 37

X-Ray Sensitivity ........................................................................ 37

Packaging and Ordering Information ......................................... 38

Outline Dimensions ................................................................... 38

Ordering Guide .......................................................................... 38

REVISION HISTORY

1/2021—Revision 0: Initial Version