Datasheet ADXRS646 (Analog Devices)

High Stability, Low Noise Vibration Rejecting Yaw Rate Gyroscope Enhanced Product ADXRS646-EP FEATURES GENERAL DESCRIPTION 12°/hr bias stability
The ADXRS646-EP is a high performance angular rate sensor
Z-axis (yaw rate) response
(gyroscope) that offers excellent vibration immunity. Bias stability
0.01°/√sec angle random walk
is a widely recognized figure of merit for high performance gyro-
High vibration rejection over wide frequency
scopes, but in real-world applications, vibration sensitivity is
Measurement range extendable to a maximum of ±450°/sec
often a more significant performance limitation and should be
10,000 g powered shock survivability
considered in gyroscope selection. The ADXRS646-EP offers
Ratiometric to referenced supply
superior vibration immunity and acceleration rejection as well
6 V single-supply operation
as a low bias drift of 12°/hr (typical), enabling it to offer rate sens-
Self-test on digital command
ing in harsh environments where shock and vibration are present.
Ultrasmall and light (<0.15 cc, <0.5 gram) Temperature sensor output
The ADXRS646-EP is manufactured using the Analog Devices,
Complete rate gyroscope on a single chip
Inc., patented high volume BiMOS surface-micromachining
RoHS compliant
process. An advanced, differential, quad sensor design provides the improved acceleration and vibration rejection. The output
ENHANCED PRODUCT FEATURES
signal, RATEOUT, is a voltage proportional to angular rate about
Supports defense and aerospace applications
the axis normal to the top surface of the package. The measure-
Extended industrial temperature range (−55°C to +105°C)
ment range is a minimum of ±250°/sec. The output is ratiometric
Controlled manufacturing baseline
with respect to a provided reference supply. Other external capaci-
1 assembly/test site
tors are required for operation.
1 fabrication site Enhanced product change notification
A temperature output is provided for compensation techniques.
Qualification data available on request
Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal condi-
APPLICATIONS
tioning circuits.
Industrial applications Severe mechanical environments
The ADXRS646-EP is available in a 7 mm × 7 mm × 3 mm CBGA
Platform stabilization
chip-scale package. Additional application and technical infor- mation can be found in the ADXRS646-EP data sheet.
FUNCTIONAL BLOCK DIAGRAM 3V TO 6V (ADC REF)100nF 6V ST2 ST1 TEMP VRATIO AV ADXRS646-EP CC 100nF SELF-TEST 25kΩ 25kΩ @ 25°C AGND DEMOD DRIVE MECHANICAL AC VGA AMP SENSOR AMP R 6V OUT VDD 180kΩ ±1% CHARGE PUMP AND VOLTAGE 100nF REGULATOR PGND CP1 CP2 CP3 CP4 CP5 SUMJ RATEOUT 100nF
001
22nF 22nF C
46-
OUT
100 Figure 1.
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Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS RATE SENSITIVE AXIS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES NOTES