Document
Data Sheet
Compact, Precision Six Degrees of Freedom Inertial Sensor
ADIS16445
FEATURES
GENERAL DESCRIPTION
Triaxial digital gyroscope with digital range scaling
The ADIS16445 iSensor® device is a complete inertial system
±62°/sec, ±125°/sec, ±250°/sec settings
that includes a triaxial gyroscope and a triaxial accelerometer.
Axis-to-axis alignment, <0.05°
Each sensor in the ADIS16445 combines industry-leading
Triaxial digital accelerometer, ±5 g minimum
iMEMS® technology with signal conditioning that optimizes
Autonomous operation and data collection
dynamic performance. The factory calibration characterizes
No external configuration commands required
each sensor for sensitivity, bias, and alignment. As a result, each
175 ms start-up time
sensor has its own dynamic compensation formulas that provide
Factory calibrated sensitivity, bias, and axial alignment
accurate sensor measurements.
Calibration temperature range: −40°C to +85°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
The ADIS16445 provides a simple, cost-effective method for
integrating accurate, multi-axis 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.
2000 g shock survivability
The ADIS16445 has a compatible pinout for systems that
Operating temperature range: −40°C to +105°C
currently use other Analog Devices, Inc., inertial measurement
APPLICATIONS
unit (IMU) products, such as the ADIS16334 or the ADIS16485. The ADIS16445 is packaged in a module that is
Platform stabilization and control
approximately 24.1 mm × 37.7 mm × 10.8 mm and has a standard
Navigation
connector interface.
Robotics
FUNCTIONAL BLOCK DIAGRAM
DIO1 DIO2 DIO3 DIO4 RST
VDD
SELF TEST
I/O
ALARMS
POWER MANAGEMENT
GND
TRIAXIAL GYRO
TRIAXIAL ACCEL
TEMP
VDD
CONTROLLER
CALIBRATION AND
FILTERS
CLOCK
ADIS16445 Figure 1.
OUTPUT DATA
REGISTERS
USER CONTROL REGISTERS
SPI
CS SCLK DIN DOUT
11051-001
Rev. I
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ADIS16445
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 4
Timing Specifications .................................................................. 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
User Registers.................................................................................. 10
User Interface .................................................................................. 11
Reading Sensor Data .................................................................. 11
Device Configuration ................................................................ 12
Output Data Registers.................................................................... 13
Gyroscopes ...................................................................