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ADXRS642 Datasheet(Arkusz danych) 1 Page - Analog Devices

Numer części ADXRS642
Szczegółowy opis  Vibration Rejecting ±250°/s Yaw Rate Gyro
Pobierz  10 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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Vibration Rejecting ±250°/s Yaw Rate Gyro
Preliminary Technical Data
ADXRS642
Rev. Pr A
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
www.analog.com
Fax: 781.461.3113
©201 Analog Devices, Inc. All rights reserved.
FEATURES
Complete rate gyroscope on a single chip
Z-axis (yaw rate) response
20°/hour bias stability
0.02°/√second angle random walk
High vibration rejection over wide frequency
10,000 g powered shock survivability
Ratiometric to referenced supply
5 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
RoHS compliant
APPLICATIONS
Industrial applications
Inertial Measurement Units
Severe Mechanical Environments
Platform stabilization
GENERAL DESCRIPTION
The ADXRS642 is a complete angular rate sensor (gyroscope)
that uses the Analog Devices, Inc., surface-micromachining
process to make a functionally complete and low cost angular rate
sensor integrated with all of the required electronics on one chip.
The manufacturing technique for this device is a patented high
volume BiMOS process with years of proven field reliability.
The ADXRS642 is an industrial grade gyroscope that is 100%
pin, package, temperature, and function compatible with the
ADXRS622 and ADXRS652 – while offering enhanced
vibration rejection
The output signal, RATEOUT (1B, 2A), is a voltage propor-
tional to angular rate about the axis normal to the top surface
of the package. The measurement range is a minimum of
±250°/s. 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 ADXRS642 is available in a 7 mm × 7 mm ×
3 mm BGA chip-scale package.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. Block Diagram
VDD
AGND
PGND
AV CC
ST2
ST1
TEMP
VRATIO
CP1
CP2
CP3
CP4
CP5
SUMJ
RATEOUT
DEMOD
180k
 ±1%
22nF
100nF
22nF
100nF
100nF
100nF
DRIVE
AMP
MECHANICAL
SENSOR
CHARGE PUMP
AND VOLTAGE
REGULATOR
COUT
5V
5V
(ADC REF)
AC
AMP
VGA
25k
@ 25°C
ADXRS642
25k
SELF-TEST
08820-001
3 to 5V




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