ADXRS620 Datasheet, PDF (1/12 Pages) Analog Devices – ±300°/sec Yaw Rate Gyro

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
±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
AV_CC
100nF
AGND
ST2 ST1
SELF-TEST
DRIVE
AMP
MECHANICAL
SENSOR
TEMP V_RATIO
ADXRS620
25kΩ ^25kΩ
@ 25°C
DEMOD
AC
AMP
VGA
+5V
V_DD
100nF
PGND
CHARGE PUMP
AND VOLTAGE
REGULATOR
180kΩ ±1%
CP1 CP2 CP3 CP4 CP5 SUMJ
RATEOUT
22nF
22nF
100nF
C_OUT
Figure 1.
Rev. 0
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