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ADXRS620 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADXRS620
Beschreibung +-300 /sec Yaw Rate Gyro
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADXRS620 Datasheet, Funktion
FEATURES
Complete rate gyroscope on a single chip
Z-axis (yaw rate) response
High vibration rejection over wide frequency
2000 g powered shock survivability
Ratiometric to referenced supply
5 V single-supply operation
105°C operation
Self-test on digital command
Ultrasmall and light (<0.15 cc, <0.5 gram)
Temperature sensor output
RoHS compliant
APPLICATIONS
Vehicle chassis rollover sensing
Inertial measurement units
Platform stabilization
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±300°/sec Yaw Rate Gyro
ADXRS620
GENERAL DESCRIPTION
The ADXRS620 is a complete angular rate sensor (gyroscope)
that uses the Analog Devices, Inc., surface-micromachining
process to create a functionally complete and low cost angular
rate sensor integrated with all required electronics on one chip.
The manufacturing technique for this device is the same high
volume BiMOS process that is used for high reliability automotive
airbag accelerometers.
The output signal, RATEOUT (1B, 2A), is a voltage that is
proportional to angular rate about the axis normal to the top
surface of the package. The output is ratiometric with respect
to a provided reference supply. An external capacitor sets the
bandwidth. 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 ADXRS620 is available in a 7 mm × 7 mm ×
3 mm BGA ceramic package.
FUNCTIONAL BLOCK DIAGRAM
+5V
(ADC REF)
100nF
+5V
AVCC
100nF
AGND
ST2 ST1
SELF-TEST
DRIVE
AMP
MECHANICAL
SENSOR
TEMP VRATIO
ADXRS620
25k25k
@ 25°C
AC
AMP
VGA
DEMOD
+5V
VDD
100nF
PGND
CHARGE PUMP
AND VOLTAGE
REGULATOR
180k±1%
CP1 CP2 CP3 CP4 CP5 SUMJ
RATEOUT
22nF
22nF
100nF
COUT
Figure 1.
Rev. 0
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
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.






ADXRS620 Datasheet, Funktion
ADXRS620
TYPICAL PERFORMANCE CHARACTERISTICS
N > 1000 for all typical performance plots, unless otherwise noted.
20
18
16
14
12
10
8
6
4
2
0
RATE OUT (V)
Figure 4. Null Output at 25°C (VRATIO = 5 V)
45
40
35
30
25
20
15
10
5
0
–0.5 –0.4 –0.3 –0.2 –0.1 0
0.1 0.2 0.3 0.4 0.5
(°/sec°/C)
Figure 5. Null Drift over Temperature (VRATIO = 5 V)
16
14
12
10
8
6
4
2
0
5.5 5.6 5.7 5.8 5.9 6 6.1 6.2 6.3 6.4 6.5
SENSITIVITY (mV/°/sec)
Figure 6. Sensitivity at 25°C (VRATIO = 5 V)
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30
25
20
15
10
5
0
–10 –8 –6 –4 –2 0 2 4 6 8
DRIFT (%)
Figure 7. Sensitivity Drift over Temperature
10
35
30
25
20
15
10
5
0
–650 –610 –570 –530 –490 –450 –410 –370 –330 –290 –250
ST1 Δ (mV)
Figure 8. ST1 Output Change at 25°C (VRATIO = 5 V)
40
35
30
25
20
15
10
5
0
250 290 330 370 410 450 490 530 570 610 650
ST2 Δ (mV)
Figure 9. ST2 Output Change at 25°C (VRATIO = 5 V)
Rev. 0 | Page 6 of 12

6 Page









ADXRS620 pdf, datenblatt
ADXRS620
NOTES
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©2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D08887-0-3/10(0)
Rev. 0 | Page 12 of 12

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