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ADXRS646-EP Datasheet(PDF) 1 Page - Analog Devices

Part No. ADXRS646-EP
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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ADXRS646-EP Datasheet(HTML) 1 Page - Analog Devices

 
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High Stability, Low Noise
Vibration Rejecting Yaw Rate Gyroscope
Enhanced Product
ADXRS646-EP
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
©2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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
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
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC standard)
Extended industrial temperature range (−55°C to +105°C)
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Industrial applications
Severe mechanical environments
Platform stabilization
GENERAL DESCRIPTION
The ADXRS646-EP 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 gyro-
scopes, but in real-world applications, vibration sensitivity is
often a more significant performance limitation and should be
considered in gyroscope selection. The ADXRS646-EP offers
superior vibration immunity and acceleration rejection as well
as a low bias drift of 12°/hr (typical), enabling it to offer rate sens-
ing in harsh environments where shock and vibration are present.
The ADXRS646-EP 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 measure-
ment range is a minimum of ±250°/sec. The output is ratiometric
with respect to a provided reference supply. Other external capaci-
tors 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-EP is available in a 7 mm × 7 mm × 3 mm CBGA
chip-scale package. Additional application and technical infor-
mation can be found in the ADXRS646-EP data sheet.
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-EP
25kΩ
SELF-TEST


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