ADIS16385 Datasheet, PDF (1/20 Pages) Analog Devices – Six Degrees of Freedom Inertial Sensor

Six Degrees of Freedom Inertial Sensor
Preliminary Technical Data
ADIS16385
FEATURES
Triaxis digital gyroscope with digital range scaling
±75°/sec, ±150°/sec, ±300°/sec settings
Orthogonal alignment: <0.05°
In-run bias stability: 6°/hour (yaw), 25°/hour (pitch/roll)
Triaxis digital accelerometer: ±5 g
Autonomous operation and data collection
No external configuration commands required
Startup time: 180 ms
Sleep mode recovery: 4 ms
Factory-calibrated sensitivity, bias, and axial alignment
Calibration temperature range: −40°C to +85°C
Single serial peripheral interface, SPI-compatible
Wide bandwidth: 330 Hz
Embedded temperature sensor
Programmable operation and control
Automatic and manual bias correction controls
Digital filters: Bartlett FIR, average/decimation
Digital I/O: data-ready, alarm indicator, general-purpose
Alarms for condition monitoring
Sleep mode for power management
DAC output voltage
Enable external sample clock input: up to 1.2 kHz
Single-supply operation: 4.85 V to 5.15 V
2000 g shock survivability
Operating temperature range: −40°C to +105°C
APPLICATIONS
Platform stabilization and control
Navigation
Robotics
FUNCTIONAL BLOCK DIAGRAM
AUX_ADC AUX_DAC
TEMPERATURE
SENSOR
TRI-AXIS MEMS
ANGULAR RATE
SENSOR
SIGNAL
CONDITIONING
AND
CONVERSION
CALIBRATION
AND
DIGITAL
PROCESSING
OUTPUT
REGISTERS
AND SPI
INTERFACE
CS
SCLK
DIN
DOUT
TRI-AXIS MEMS
ACCELERATION
SENSOR
SELF-TEST
A_AADDD_III_SSS₁11₆6_3638365605/
ALARMS
DIGITAL
CONTROL
POWER
MANAGEMENT
RST DIO1 DIO2 DIO3 DIO4/CLKIN
VCC
GND
Figure 1.
GENERAL DESCRIPTION
The ADIS16385 iSensor® devices are complete inertial systems
that include a triaxis gyroscope and triaxis accelerometer. Each
sensor in the ADIS16385 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 (gyro bias).
As a result, each sensor has its own dynamic compensation formulas
that provide accurate sensor measurements. The yaw-axis gyro-
scope offers a 4× improvement in noise and in-run bias stability
for applications that have greater requirements on one axis.
The ADIS16385 provide 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 structure provide a simple interface for
data collection and configuration control.
The ADIS16385 has a compatible pinout for systems that currently
use ADIS1635x, ADIS1636x, and ADIS1640x IMU products.
It comes in a module that is approximately 36 mm × 47 mm ×
39 mm and has a standard connector interface.
Rev. PrA
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