ADXRS642BBGZ Analog Devices Inc, ADXRS642BBGZ Datasheet

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ADXRS642BBGZ

Manufacturer Part Number
ADXRS642BBGZ
Description
250 /1sec Yaw Rate Gyroscope
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADXRS642BBGZ

No. Of Axes
1
Sensor Case Style
BGA
No. Of Pins
32
Supply Voltage Range
4.75V To 5.25V
Operating Temperature Range
-40°C To +105°C
Package / Case
32-CBGA
Sensitivity
7 MV/°/s
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Operating Temperature (max)
105C
Rad Hardened
No
Lead Free Status / Rohs Status
Compliant

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADXRS642BBGZ
Manufacturer:
NUVOTON
Quantity:
562
Part Number:
ADXRS642BBGZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
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 a 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
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.
Trademarks and registered trademarks are the property of their respective owners.
100nF
100nF
5V
5V
AV
AGND
V
PGND
DD
CC
CP1 CP2 CP3 CP4 CP5
DRIVE
AMP
22nF
FUNCTIONAL BLOCK DIAGRAM
CHARGE PUMP
AND VOLTAGE
REGULATOR
ST2
Vibration Rejecting ±250°/s Yaw Rate Gyroscope
MECHANICAL
SELF-TEST
SENSOR
ST1
22nF
Figure 1.
@ 25°C
100nF
SUMJ
25kΩ
TEMP
AMP
AC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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
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.
C
OUT
25kΩ
V
RATIO
(ADC REF)
3V TO 5V
180kΩ ±1%
RATEOUT
VGA
and ADXRS652, while offering enhanced vibration
ADXRS642
100nF
DEMOD
©2011 Analog Devices, Inc. All rights reserved.
ADXRS642
www.analog.com

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ADXRS642BBGZ Summary of contents

Page 1

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 a wide frequency 10,000 g powered shock survivability Ratiometric to referenced supply 5 V single supply operation ...

Page 2

ADXRS642 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 Rate Sensitive Axis ....................................................................... 4 ESD Caution .................................................................................. 4 ...

Page 3

SPECIFICATIONS All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed angular rate = 0°/sec, bandwidth = RATIO CC Table 1. Parameter Conditions SENSITIVITY Clockwise rotation is positive output 1 ...

Page 4

ADXRS642 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Acceleration (Any Axis, 0.5 ms) Unpowered Powered RATIO ST1, ST2 Output Short-Circuit Duration (Any Pin to Common) Operating Temperature Range Storage Temperature Range Stresses above those listed ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS PGND ST1 ST2 TEMP AGND Table 3. Pin Function Descriptions Pin No. Mnemonic 6D, 7D CP5 6A, 7B CP4 6C, 7C CP3 5A, 5B CP1 4A, 4B CP2 3A 1B, 2A RATEOUT ...

Page 6

ADXRS642 TYPICAL PERFORMANCE CHARACTERISTICS 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 2.75 2.80 NULL BIAS (V) Figure 4. Null Bias at 25° ...

Page 7

TIME (Seconds) Figure 10. Typical Root Allan Deviation at 25°C vs. Averaging Time 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 ...

Page 8

ADXRS642 THEORY OF OPERATION The ADXRS642 operates on the principle of a resonator gyro. Figure 13 shows a simplified version of one of four polysilicon sensing structures. Each sensing structure contains a dither frame that is electrostatically driven to resonance. ...

Page 9

MODIFYING THE MEASUREMENT RANGE The ADXRS642 scale factor can be reduced to extend the measurement range to as much as ±450°/sec by adding a single 225 kΩ resistor between the RATEOUT and SUMJ external resistor is added between ...

Page 10

... ADXRS642 OUTLINE DIMENSIONS A1 BALL CORNER 3.80 MAX ORDERING GUIDE Model 1 Temperature Range ADXRS642BBGZ –40°C to +105°C ADXRS642BBGZ-RL –40°C to +105°C EVAL-ADXRS642Z RoHS Compliant Part. 7.05 6. 4.80 BSC SQ 0.80 BSC T OP VIEW BOTTOM VIEW DETAIL A DETAIL A 0.60 MAX ...

Page 11

NOTES Rev Page ADXRS642 ...

Page 12

ADXRS642 NOTES ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D09770-0-4/11(0) Rev Page ...

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