鹵150擄/s Single Chip Yaw Rate
Gyro with Signal Conditioning
ADXRS150
FEATURES
Complete rate gyroscope on a single chip
Z-axis (yaw rate) response
High vibration rejection over wide frequency
0.05擄/s/鈭欻z noise
2000 g powered shock operation
Self-test on digital command
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)
GENERAL DESCRIPTION
The ADXRS150 is a complete angular rate sensor (gyroscope)
that uses Analog Devices鈥?surface-micromachining process to
make a functionally complete and low cost angular rate sensor
integrated with all of the 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 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 21).
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 脳 7 mm 脳 3 mm BGA
surface-mount
package.
APPLICATIONS
GPS navigation systems
Vehicle stability control
Inertial measurement units
Guidance and control
Platform stabilization
FUNCTIONAL BLOCK DIAGRAM
+
5V
鈥?/div>
100nF
AVCC
3A
100nF
AGND
2G
1F
CMID
1D
C
OUT
SUMJ
1C
R
OUT
R
SEN2
180k
鈩?/div>
1%
1B
ST1
ST2
5G
4G
SELF
TEST
CORIOLIS SIGNAL CHANNEL
R
SEN1
RATE
SENSOR
蟺
DEMOD
鈮?/div>
9k
鈩?/div>
鹵
35%
鈮?/div>
9k
鈩?/div>
鹵
35%
RESONATOR LOOP
2.5V REF
PTAT
2A
RATEOUT
1E
2.5V
3G
TEMP
12V
CHARGE PUMP/REG.
PDD
4A
5A
7E
6G
7F
6A
7B
7C
7D
CP2
22nF
CP1
100nF
PGND
CP4
CP3
CP5
47nF
ADXRS150
22nF
Figure 1.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
漏 2003 Analog Devices, Inc. All rights reserved.
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