± ±150°/Sec YacꢀYꢁScꢂGyroerꢃS
cc
ADXꢀ/623
FEATURES
GENERAL DESCRIPTION
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
The ADXRS623 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 used for high reliability automotive
airbag accelerometers.
–40°C to +105°C operation
Self-test on digital command
Ultrasmall and light (<0.15 cc, <0.5 gram)
Temperature sensor output
The output signal, RATEOUT (1B, 2A), is a voltage proportional
to the angular rate about the axis that is normal to the top surface
of the package. The output is ratiometric with respect to a pro-
vided reference supply. An external capacitor sets the bandwidth.
Other external capacitors are required for operation.
RoHS compliant
APPLICATIONS
Inertial measurement units
Platform stabilization
Robotics
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 con-
ditioning circuits. The ADXRS623 is available in a 7 mm × 7 mm
× 3 mm ceramic ball grid array (CBGA) package.
FUNCTIONAL BLOCK DIAGRAM
+5V
(ADC REF)
100nF
+5V
ST2 ST1
TEMP
V
RATIO
ADXRS623
AV
CC
100nF
25kΩ
SELF-TEST
25kΩ
@ 25°C
AGND
DEMOD
MECHANICAL
SENSOR
DRIVE
AMP
AC
AMP
VGA
+5V
180kΩ ± 1%
V
DD
CHARGE PUMP
AND VOLTAGE
REGULATOR
100nF
PGND
CP1 CP2 CP3 CP4 CP5
SUMJ
100nF
RATEOUT
22nF
22nF
C
OUT
Figure 1.
Rev. 0
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