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ADIS16448 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADIS16448
Beschreibung Ten Degrees of Freedom Inertial Sensor
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
ADIS16448 Datasheet, Funktion
Data Sheet
Compact, Precision
Ten Degrees of Freedom Inertial Sensor
ADIS16448
FEATURES
GENERAL DESCRIPTION
Triaxial digital gyroscope with digital range scaling
±250°/sec, ±500°/sec, ±1000°/sec settings
Axis-to-axis alignment, <0.05°
Triaxial digital accelerometer, ±18 g minimum
Triaxial digital magnetometer, ±1.9 gauss minimum
Digital barometer, 10 mbar to 1200 mbar
Calibrated pressure range: 300 mbar to 1100 mbar
Autonomous operation and data collection
No external configuration commands required
205 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
The ADIS16448 iSensor® device is a complete inertial system
that includes a triaxial gyroscope, a triaxial accelerometer, a
triaxial magnetometer, and pressure sensors. Each sensor in
the ADIS16448 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). As a
result, each sensor has its own dynamic compensation formulas
that provide accurate sensor measurements.
The ADIS16448 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 ADIS16448 has a compatible pinout for systems that currently
use other Analog Devices, Inc., IMU products (ADIS163xx/
ADIS164xx). The ADIS16448 is packaged in a module that is
approximately 24.1 mm × 37.7 mm × 10.8 mm and has a standard
connector interface.
APPLICATIONS
Platform stabilization and control
Navigation
Robotics
FUNCTIONAL BLOCK DIAGRAM
DIO1 DIO2 DIO3 DIO4/CLKIN RST
VDD
SELF TEST
I/O
ALARMS
POWER
MANAGEMENT
TRIAXIAL
GYRO
TRIAXIAL
ACCEL
TRIAXIAL
MAGN
PRESSURE
TEMP
VDD
CALIBRATION
CONTROLLLER
AND
FILTERS
CLOCK
ADIS16448
OUTPUT
DATA
REGISTERS
USER
CONTROL
REGISTERS
SPI
Figure 1.
GND
CS
SCLK
DIN
DOUT
Rev. B
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2012–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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ADIS16448 Datasheet, Funktion
ADIS16448
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Acceleration
Any Axis, Unpowered
Any Axis, Powered
VDD to GND
Digital Input Voltage to GND
Digital Output Voltage to GND
Temperature
Operating Range
Storage Range
Pressure
Rating
2000 g
2000 g
−0.3 V to +3.45 V
−0.3 V to +VDD + 0.3 V
−0.3 V to +VDD + 0.3 V
−40°C to +85°C
−65°C to +125°C1, 2
2 bar
1 Extended exposure to temperatures outside the specified temperature
range of −40°C to +105°C can adversely affect the accuracy of the factory
calibration. For best accuracy, store the parts within the specified operating
range of −40°C to +105°C.
2 Although the device is capable of withstanding short-term exposure to
150°C, long-term exposure threatens internal mechanical integrity.
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 4. Package Characteristics
Package Type
θJA
(°C/W)
20-Lead Module (ML-20-2) 36.5
θJC
(°C/W)
16.9
Mass
(grams)
15
ESD CAUTION
Rev. B | Page 6 of 24
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ADIS16448 pdf, datenblatt
ADIS16448
Data Sheet
OUTPUT DATA REGISTERS
Each sensor in the ADIS16448 has a dedicated output register
in the user register map (see Table 6). Figure 17 provides
arrows, which describe the direction or rotation (gX, gY, gZ),
acceleration (aX, aY, aZ), and magnetic field (mX, mY, mZ) that
will produce a positive response in its output data.
GYROSCOPES
XGYRO_OUT (see Table 9) contains x-axis gyroscope data (gX
in Figure 17), YGYRO_OUT (see Table 10) contains y-axis gyro-
scope data (gY in Figure 17), and ZGYRO_OUT (see Table 11)
contains z-axis gyroscope data (gZ in Figure 17). Table 12
illustrates the gyroscope data format with numerical examples.
Table 9. XGYRO_OUT (Base Address = 0x04), Read Only
Bits Description
[15:0] X-axis gyroscope data, twos complement format,
25 LSB/°/sec (SENS_AVG[15:8] = 0x04), 0°/sec = 0x0000
Table 10. YGYRO_OUT (Base Address = 0x06), Read Only
Bits Description
[15:0] Y-axis gyroscope data, twos complement format,
25 LSB/°/sec (SENS_AVG[15:8] = 0x04), 0°/sec = 0x0000
Table 11. ZGYRO_OUT (Base Address = 0x08), Read Only
Bits Description
[15:0] Z-axis gyroscope data, twos complement format,
25 LSB/°/sec (SENS_AVG[15:8] = 0x04), 0°/sec = 0x0000
Table 12. Rotation Rate, Twos Complement Format1
Rotation
Rate (°/sec) Decimal Hex
Binary
+1000
+25,000 0x61A8 0110 0001 1010 1000
+2 ÷ 25
+2
0x0002 0000 0000 0000 0010
+1 ÷ 25
+1
0x0001 0000 0000 0000 0001
0 0 0x0000 0000 0000 0000 0000
−1 ÷ 25
−1
0xFFFF 1111 1111 1111 1111
−2 ÷ 25
−2
0xFFFE 1111 1111 1111 1110
−1000
−25,000 0x9E58 1001 1110 0101 1000
ACCELEROMETERS
XACCL_OUT (see Table 13) contains x-axis accelerometer data
(aX in Figure 17), YACCL_OUT (see Table 14) contains y-axis
accelerometer data (aY in Figure 17), and ZACCL_OUT (see
Table 15) contains z-axis accelerometer data (aZ in Figure 17).
Table 16 illustrates the accelerometer data format with numerical
examples.
Table 13. XACCL_OUT (Base Address = 0x0A), Read Only
Bits Description
[15:0]
X-axis acceleration data, twos complement format,
1200 LSB/g, 0 g = 0x0000
Table 14. YACCL_OUT (Base Address = 0x0C), Read Only
Bits Description
[15:0]
Y-axis acceleration data, twos complement format,
1200 LSB/g, 0 g = 0x0000
Table 15. ZACCL_OUT (Base Address = 0x0E), Read Only
Bits Description
[15:0]
Z-axis acceleration data, twos complement format,
1200 LSB/g, 0 g = 0x0000
Table 16. Acceleration, Twos Complement Format
Acceleration (g) Decimal Hex
Binary
+18 +21,600 0x5460 0101 0100 0101 0000
+2 ÷ 1200
+2 0x0002 0000 0000 0000 0010
+1 ÷ 1200
+1 0x0001 0000 0000 0000 0001
0 0 0x0000 0000 0000 0000 0000
−1 ÷ 1200
−1 0xFFFF 1111 1111 1111 1111
−2 ÷ 1200
−2 0xFFFE 1111 1111 1111 1110
−18 −21,600 0xABA0 1010 1011 1010 0000
1 SENS_AVG[15:8] = 0x04, see Table 35.
Z-AXIS
aZ mZ
gZ
Y-AXIS
aY
mY
gY
mX
X-AXIS
aX
gX
Figure 17. Inertial Sensor Direction Reference
Rev. B | Page 12 of 24
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