±300°/sec Yaw Rate Gyro
ADXRS620
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
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.
APPLICATIONS
Vehicle chassis rollover sensing
Inertial measurement units
Platform stabilization
FUNCTIONAL BLOCK DIAGRAM
+5V
(ADC REF)
100nF
+5V
AV
CC
100nF
AGND
ST2
ST1
TEMP
V
RATIO
25kΩ
ADXRS620
SELF-TEST
25kΩ
@ 25°C
DEMOD
DRIVE
AMP
MECHANICAL
SENSOR
AC
AMP
VGA
+5V
V
DD
180kΩ ±1%
CHARGE PUMP
AND VOLTAGE
REGULATOR
CP1 CP2 CP3 CP4 CP5
SUMJ
100nF
22nF
22nF
C
OUT
RATEOUT
08887-001
100nF
PGND
Figure 1.
Rev. 0
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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