ADXRS150_15 Datasheet, PDF (1/12 Pages) Analog Devices – 150/s Single Chip Yaw Rate Gyro with Signal Conditioning

±150°/s Single Chip Yaw Rate
Gyro with Signal Conditioning
ADXRS150
FEATURES
GENERAL DESCRIPTION
Complete rate gyroscope on a single chip
Z-axis (yaw rate) response
High vibration rejection over wide frequency
0.05°/s/√Hz noise
2000 g powered shock survivability
The ADXRS150 is a complete angular rate sensor (gyroscope)
that uses Analog Devices’ surface-micromachining process to
make a functionally complete and low cost angular rate sensor
integrated with all of the required electronics on one chip.
Self-test on digital command
The manufacturing technique for this device is the same high
Temperature sensor output
Precision voltage reference output
Absolute rate output for precision applications
5 V single-supply operation
Ultrasmall and light (< 0.15 cc, < 0.5 gram)
E _APPLICATIONS
GPS navigation systems
Vehicle stability control
T _{Inertial measurement units}
Guidance and control
E ^{Platform stabilization}
volume BIMOS process used for high reliability automotive
airbag accelerometers.
The output signal, RATEOUT (1B, 2A), is a voltage proportional
to the angular rate about the axis normal to the top surface of
the package (see Figure 2). A single external resistor can be used
to lower the scale factor. An external capacitor is used to set the
bandwidth. Other external capacitors are required for operation
(see Figure 22).
A precision reference and a temperature output are also pro-
vided for compensation techniques. Two digital self-test inputs
electromechanically excite the sensor to test the operation of
both sensors and the signal conditioning circuits. The ADXRS150
is available in a 7 mm × 7 mm × 3 mm BGA surface-mount
package.
OL _{ST1 5G}
OBS ^{ST2 4G}
FUNCTIONAL BLOCK DIAGRAM
AVCC
3A
+ _5V –
100nF
AGND
2G
1F
100nF
CMID
1D
C_OUT
SUMJ
1C
SELF
TEST
RATE
SENSOR
CORIOLIS SIGNAL CHANNEL
π DEMOD
R_SEN1
R_SEN2
≈9kΩ ±35% ≈9kΩ ±35%
RESONATOR LOOP
R_OUT
180kΩ 1%
1B
RATEOUT
2A
2.5V REF
1E 2.5V
PTAT
3G TEMP
12V
CHARGE PUMP/REG.
ADXRS150
PDD
4A 5A
7E
CP2
CP1
22nF
6G
7F
PGND
100nF
Figure 1.
6A 7B 7C
7D
CP4 CP3 CP5
47nF
22nF
Rev. B
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