Ceramic Gyro
Outline
Ceramic Gyro is a miniature angular rate sensor having
a very simple construction that is made up of a single
piezoelectric ceramic column printed with electrodes.
Features
• Miniature size
• High-speed response
• Magnetic field proof
• SMD applicable to lead-free reflow soldering (CG-L53)
Applications
• Image stabilizing system on camcorder, camera
and binocular
• Stability control of radio-controlled helicopter
• Input equipment (mouse etc.)
CG - L43
Condition
(V)
(V)
(mA) max.
(deg/sec)
(mV/deg/sec)
(mV) max.
Any temperature
Temperature characteristics of sensitivity
Frequency response
Operating temperature range
Storage temperature range
Dimensions
(%)
(Hz) min.
(˚C)
(˚C)
(mm)
-90deg
25˚C
25˚C
25˚C
Output voltage at zero angular rate
Specifications
+3
+1.3
4
±90
0.66
±20%
±300
±500
±15
100
-5 to 75
-40 to 80
8
✕
16
✕
5
CG - L53
Specifications
+3
+1.3
4
±90
0.66
±20%
±300
±500
±15
100
-5 to 75
-40 to 80
6
✕
10
✕
2.5
Specifications
Model
Item
Supply voltage
Reference voltage output
Current consumption
Maximum detectable angular rate
Sensitivity
* Two ceramic gyro models in two specifications each
(CG-L43A0/A1 and CG-L53A0/A1) are provided so
that noise interference can be avoided. When two
gyro rate sensors are to be used within a short distance,
it is recommended to combine each specification.
Vibrating Element Structure
Rotation angular rateΩ
Frequency - Phase Characteristics
100
: Direction of vibration
;;;;
;;;;
Phase [deg]
0
C: Output electrode
A: Drive electrode
B: Output electrode
–100
10
0
10
1
Frequency [Hz]
10
2
NEC TOKIN Sensors Vol.03 23
Shape and Dimensions
• CG-L43
• CG-L53
4–R0.5
15.5
6±0.2
8.0
+
10±0.2 GND
1.2
2.0
4.9
2.5
+0.2
–0.1
0.6
15.24±0.5
7.75
3.81
4.8±0.2
7.8±0.2
Vref
GND
4.8±0.2
(mm)
1.0
Vref
1.9
Vcc
Vout
Vcc
(mm)
Circuit Connection Examples
1800pF
180kΩ
CG-L43
11µF
GND
Vref
Vout
Vcc
200kΩ
62kΩ
OUTPUT
3V
4.7µF
1) Since a residual carrier noise (24 to 28 Hz) may be included in the output voltage (between
Vref and Vout), it is necessary to connect a low pass filter for higher harmonic component
elimination.
2) A high pass filter is generally connected for eliminating the influence of output voltage fluc-
tuation (by temperature, etc.) in stationary state.
3) It is recommended to ground the Vref terminal with a capacitance of 4.7µF to stabilize the
Vref output.
Before Using Ceramic Gyro
• When transporting or handling a sensor, be careful not to drop it or subject it to any other physical shock.
Failure to do so may lead to internal damage or deterioration of its characteristics.
• Avoid applying mounting voltages higher than the rating to the sensors pins. This will lead to overheating
or damage to the sensors.
• As sensors are not water resistant, cleaning should be avoided.
• When handling sensors, anti-electrostatic precautions must be taken.
24 NEC TOKIN Sensors Vol.03
6.0±0.2
GND
Vout
Analogue and Mixed Signal
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