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PDF ADXRS646 Data sheet ( Hoja de datos )
| Número de pieza | ADXRS646 | |
| Descripción | Low Noise Vibration Rejecting Yaw Rate Gyro | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Preliminary Technical Data
FEATURES
Complete rate gyroscope on a single chip
Z-axis (yaw rate) response
8°/hour bias stability
0.01°/√second angle random walk
High vibration rejection over wide frequency
Measurement range extendable to a maximum of ±450°/s
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
RoHS compliant
APPLICATIONS
Industrial applications
Severe Mechanical Environments
Platform stabilization
High Stability, Low Noise
Vibration Rejecting Yaw Rate Gyro
ADXRS646
GENERAL DESCRIPTION
The ADXRS646 is a complete angular rate sensor (gyroscope)
that uses the Analog Devices, Inc. patented high volume BiMOS
surface-micromachining process to make a complete gyro on one
chip. An advanced, differential, quad sensor design rejects the
influence of linear acceleration and vibration, enabling the
ADXRS646 to offer rate sensing in harsh environments where
shock and vibration are present.
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 ADXRS646 is available in a 7 mm × 7 mm ×
3 mm BGA chip-scale package.
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FUNCTIONAL BLOCK DIAGRAM
3 to 6V
(ADC REF)
100nF
6V
AV CC
100nF
AGND
DRIVE
AMP
ST2 ST1
SELF-TEST
MECHANICAL
SENSOR
TEMP VRATIO
25k 25k
@ 25°C
ADXRS646
AC
AMP
VGA
DEMOD
6V
VDD
100nF
PGND
CHARGE PUMP
AND VOLTAGE
REGULATOR
CP1 CP2 CP3 CP4 CP5 SUMJ
180k ±1%
RATEOUT
22nF
22nF
100nF
COUT
Figure 1. Block Diagram
08820-001
Rev. PrA
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
©2011 Analog Devices, Inc. All rights reserved.
1 page  
Preliminary Technical Data
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
PGND
VDD CP5 CP3
CP4
7
ST1
ST2
TEMP
6
CP1 5
CP2 4
AVCC 3
2
1
AGND
VRATIO NC SUMJ
GF E D C BA
Figure 3. Pin Configuration
RATEOUT
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
6D, 7D
CP5
6A, 7B
CP4
6C, 7C
CP3
5A, 5B
CP1
4A, 4B
CP2
3A, 3B
AVCC
1B, 2A
RATEOUT
1C, 2C
SUMJ
1D, 2D
NC
1E, 2E
VRATIO
1F, 2G
AGND
3F, 3G
TEMP
4F, 4G
ST2
5F, 5G
ST1
6G, 7F
PGND
6E, 7E
VDD
Description
HV Filter Capacitor, 100nF.
Charge Pump Capacitor, 22 nF.
Charge Pump Capacitor, 22 nF.
Charge Pump Capacitor, 22 nF.
Charge Pump Capacitor, 22 nF.
Positive Analog Supply.
Rate Signal Output.
Output Amp Summing Junction.
Do Not Connect.
Reference Supply for Ratiometric Output.
Analog Supply Return.
Temperature Voltage Output.
Self-Test for Sensor 2.
Self-Test for Sensor 1.
Charge Pump Supply Return.
Positive Charge Pump Supply.
ADXRS646
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Rev. PrA | Page 5 of 12
5 Page 
Preliminary Technical Data
NOTES
ADXRS646
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Rev. PrA | Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADXRS646.PDF ] | |
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