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ADXRS646BBGZ-RL Datasheet(PDF) 1 Page - Analog Devices

Part No. ADXRS646BBGZ-RL
Description  High Stability, Low Noise Vibration Rejecting Yaw Rate Gyroscope
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADXRS646BBGZ-RL Datasheet(HTML) 1 Page - Analog Devices

 
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High Stability, Low Noise
Vibration Rejecting Yaw Rate Gyroscope
Data Sheet
ADXRS646
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
FEATURES
12°/hr bias stability
Z-axis (yaw rate) response
0.01°/√sec angle random walk
High vibration rejection over wide frequency
Measurement range extendable to a maximum of ±450°/sec
10,000 g powered shock survivability
Ratiometric to referenced supply
6 V single-supply operation
−40°C to +105°C operation
Self-test on digital command
Ultrasmall and light (<0.15 cc, <0.5 gram)
Temperature sensor output
Complete rate gyroscope on a single chip
RoHS compliant
APPLICATIONS
Industrial applications
Severe mechanical environments
Platform stabilization
GENERAL DESCRIPTION
The ADXRS646 is a high performance angular rate sensor
(gyroscope) that offers excellent vibration immunity. Bias
stability is a widely-recognized figure of merit for high
performance gyroscopes, but in real-world applications,
vibration sensitivity is often a more significant performance
limitation and should be considered in gyroscope selection. The
ADXRS646 offers superior vibration immunity and acceleration
rejection as well as a low bias drift of 12°/hr (typical), enabling it
to offer rate sensing in harsh environments where shock and
vibration are present.
The ADXRS646 is manufactured using the Analog Devices,
Inc., patented high volume BiMOS surface-micromachining
process. An advanced, differential, quad sensor design provides
the improved acceleration and vibration rejection. The output
signal, RATEOUT, is a voltage proportional to angular rate
about the axis normal to the top surface of the package. The
measurement range is a minimum of ±250°/sec. The output is
ratiometric with respect to a provided reference supply. Other
external capacitors are required for operation.
A temperature output is provided for compensation techniques.
Two digital self-test inputs electromechanically excite the sensor
to test proper operation of both the sensor and the signal condi-
tioning circuits.
The ADXRS646 is available in a 7 mm × 7 mm × 3 mm CBGA
chip-scale package.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
VDD
AGND
PGND
AVCC
ST2
ST1
TEMP
VRATIO
ROUT
CP1
CP2
CP3
CP4
CP5
SUMJ
RATEOUT
DEMOD
180kΩ ±1%
22nF
100nF
22nF
100nF
100nF
100nF
DRIVE
AMP
MECHANICAL
SENSOR
CHARGE PUMP
AND VOLTAGE
REGULATOR
COUT
6V
6V
3V TO 6V
(ADC REF)
AC
AMP
VGA
25kΩ
@ 25°C
ADXRS646
25kΩ
SELF-TEST


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