ADXRS614 Datasheet, PDF (1/12 Pages) Analog Devices – ±50°/s 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
Navigation systems
Inertial measurement units
Platform stabilization
Robotics
±50°/s Yaw Rate Gyro
ADXRS614
GENERAL DESCRIPTION
The ADXRS614 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.
The output signal, RATEOUT (1B, 2A), is a voltage 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. A single external resistor between SUMJ and
RATEOUT can be used to lower the scale factor. 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
conditioning circuits. The ADXRS614 is available in a 7 mm ×
7 mm × 3 mm BGA chip scale package.
FUNCTIONAL BLOCK DIAGRAM
+5V
(ADC REF)
100nF
+5V
AV_CC
100nF
AGND
ST2 ST1
SELF-TEST
DRIVE
AMP
MECHANICAL
SENSOR
TEMP V_RATIO
ADXRS614
25kΩ ^25kΩ
@ 25°C
DEMOD
AC
AMP
VGA
+5V
V_DD
100nF
PGND
CHARGE PUMP
AND VOLTAGE
REGULATOR
200kΩ ±5%
CP1 CP2 CP3 CP4 CP5 SUMJ
RATEOUT
22nF
22nF
100nF
C_OUT
Figure 1. ADXRS614 Block Diagram
Rev. 0
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