Compact, Precision Six Degrees of

Freedom Inertial Sensor

Data Sheet

ADIS16446

Rev. 0

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FEATURES

Triaxial digital gyroscope with digital range scaling

±250°/sec, ±500°/sec, ±1000°/sec settings

Axis to axis misalignment: ±0.05°

Triaxial digital accelerometer dynamic range: ±18 g minimum

Autonomous operation and data collection

No external configuration commands required

205 ms typical power-on start-up time

Factory calibrated sensitivity, bias, and axial alignment

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

SPI-compatible

Optional burst read sequence for fast data transfer

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

Optional external sync input clock up to 1.1 kHz

Single command self test

Power supply voltage range: 3.15 V to 3.45 V

2000 g mechanical shock survivability

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

APPLICATIONS

Platform stabilization and control

Navigation

Robotics

GENERAL DESCRIPTION

The ADIS16446 iSensor® device is a complete inertial system

that includes a triaxial gyroscope, a triaxial accelerometer, and a

temperature sensor. Each sensor in the ADIS16446 combines

industry-leading iMEMS® technology with signal conditioning

that optimizes dynamic performance. The factory calibration

characterizes each sensor for sensitivity, bias, and alignment.

As a result, each sensor has its own dynamic compensation

formulas that provide accurate sensor measurements.

The ADIS16446 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 serial peripheral interface (SPI) and register structures

provide a simple interface for data collection and configuration

control.

The ADIS16446 has a compatible pinout for systems that currently

use other Analog Devices, Inc., inertial measurement unit (IMU)

products, such as the ADIS16334, ADIS16485, or ADIS16448.

The ADIS16446 is a 20-lead module that is 24.15 mm ×

37.70 mm × 10.80 mm and has a standard connector interface.

FUNCTIONAL BLOCK DIAGRAM

CONTROLLLER

CLOCK

TRIAXIAL

GYROSCOPE

TRIAXIAL

ACCELEROMETER

POWER

MANAGEMENT

CS

SCLK

DIN

DOUT

GND

VDD

DIO1 DIO2 DIO3 DIO4/CLKIN RST

SPI

TEMPERATURE

VDD

SELF TEST

I/O

ALARMS

OUTPUT

DATA

REGISTERS

USER

CONTROL

REGISTERS

CALIBRATION

AND

FILTERS

ADIS16446

Figure 1.