Crystal Oscillator
Model Name NH20M20LA
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Main Application
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Mobile communication base station
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Measuring instrument
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Synthesizer
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Exchanger
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High-end router
Oven-Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment
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Features
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Compact, with a low height.
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Excellent rise characteristics.
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Excellent phase noise characteristics.
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Excellent aging characteristics.
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Specifications
Measurement condition
Standard nominal frequency (MHz)
Power supply voltage
Power consumption
Output level
Load
Duty Cycle (1/2Vcc)
Operating temperature range
Frequency stability
Frequency warm-up characteristic +25°C three minutes after power is on
Aging
Based on frequency after 30 days operation
Based on frequency after 30 days operation
Frequency / temperature characteristic −10 to +70°C
Power supply variation characteristics DC +5V±5%
Frequency control characteristic 0 to +5 V, positive polarity
Item
Model
NH20M20LA
10 , 38.88
DC +5V
3 W max. at the start and 1.5 W max. when stable (+25°C)
HCMOS (V
OL
: 0.5V max., V
OH
: 4.5V min.)
15pF
45 to 55%
−10 to +70°C
±500×10
-9
max.
±10×10
−9
/day max.
±500×10
−9
/year max.
±200×10
−9
max.
±50×10
−9
max.
±5×10
−6
min.
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Reference Value
Offset frequency
1 Hz
10 Hz
100 Hz
1k Hz
10k Hz
dBc/Hz
−60 max.
−90 max.
−115 max.
−135 max.
−145 max.
Phase noise (@38.88MHz)
The value of phase noise changes when the frequency changes.
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Dimensions
PIN Connections
#1
#2
#3
#4
#5
VCC
OUTPUT
GND
VCONT
NC
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List of Options
Operating temperature range
Power supply voltage
Nominal frequency (MHz)
−30 to +70°C
DC +3.3V
10 to 38.88
21max
For details of options, please feel free to contact
our sales representatives.
#1
21max
#2
Terminal number is not printed
#3
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List of Ordering Codes
15.24
+0.2
−0
10.5max
4POINT
7.62
STAND OFF
(GRASS)
0.3
Frequency
(MHz)
10
38.88
Ordering Code
NH20M20LA-10M-NSA3421A
NH20M20LA-38.88M-NSA3421A
#5
5-φ0.45±0.1
7.62
15.24
#4
The above frequencies are NDK’ s standard frequencies.
Frequencies other than the above are available. Feel free to
contact our sales representatives.
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Tolerance ±0.5mm
co43_080418_NH20M20LA_e1
NDK [ NIHON DEMPA KOGYO ]
