Compact, Precision

Six Degrees of Freedom Inertial Sensor

Data Sheet

ADIS16445

Rev. A

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FEATURES

Triaxial digital gyroscope with digital range scaling

±62°/sec, ±125°/sec, ±250°/sec settings

Axis-to-axis alignment, <0.05°

Triaxial digital accelerometer, ±5 g minimum

Autonomous operation and data collection

No external configuration commands required

175 ms start-up time

Factory calibrated sensitivity, bias, and axial alignment

Calibration temperature range: −40°C to +70°C

SPI-compatible serial interface

Embedded temperature sensor

Programmable operation and control

Automatic and manual bias correction controls

Bartlett window FIR length, number of taps

Digital I/O: data ready, alarm indicator, general-purpose

Alarms for condition monitoring

Enable external sample clock input up to 1.1 kHz

Single command self test

Single-supply operation: 3.15 V to 3.45 V

2000 g shock survivability

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

APPLICATIONS

Platform stabilization and control

Navigation

Robotics

GENERAL DESCRIPTION

The ADIS16445 iSensor® device is a complete inertial system

that includes a triaxial gyroscope and a triaxial accelerometer.

Each sensor in the ADIS16445 combines industry-leading

iMEMS® technology with signal conditioning that optimizes

dynamic performance. The factory calibration characterizes

each sensor for sensitivity, bias, alignment, and linear accel-

eration (gyroscope bias). As a result, each sensor has its own

dynamic compensation formulas that provide accurate sensor

measurements.

The ADIS16445 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, greatly reducing system integration time. Tight orthogonal

alignment simplifies inertial frame alignment in navigation systems.

The SPI and register structures provide a simple interface for

data collection and configuration control.

The ADIS16445 has a compatible pinout for systems that currently

use other Analog Devices, Inc., IMU products (ADIS163xx/

ADIS164xx). The ADIS16445 is packaged in a module that is

approximately 24.1 mm × 37.7 mm × 10.8 mm and has a standard

connector interface.

FUNCTIONAL BLOCK DIAGRAM

CONTROLLLER

CLOCK

TRIAXIAL

GYRO

TRIAXIAL

ACCEL

POWER

MANAGEMENT

CS

SCLK

DIN

DOUT

GND

VDD

TEMP

VDD

DIO1 DIO2 DIO3 DIO4 RST

SPI

SELF TEST

I/O

ALARMS

OUTPUT

DATA

REGISTERS

USER

CONTROL

REGISTERS

CALIBRATION

AND

FILTERS

ADIS16445

Figure 1.