Crystal Oscillator
Model Name NH25M22WA
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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.
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A surface-mount (SMD) package.
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Reflow soldering is possible.
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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
Aging
Based on frequency after 30 days operation
Based on frequency after 30 days operation
Item
Model
NH25M22WA
32.768
DC +3.3V
3.0 W max. at the start and 1.3 W max. when stable (+25°C)
HCMOS (V
OL
: 0.4V max., V
OH
: 2.4V min.)
10kΩ//15pF
45 to 55%
−10 to +70°C
±2×10
−9
/day max.
±50×10
−9
/year max.
±20×10
−9
max.
±3×10
−9
max.
±0.9×10
−6
min.
Frequency / temperature characteristic −10 to +70°C
Power supply variation characteristics DC +3.3V±5%
Frequency control characteristic 0 to +2.8 V, positive polarity
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Reference Value
Offset frequency
1 Hz
10 Hz
100 Hz
1k Hz
10k Hz
dBc/Hz
−65 max.
−95 max.
−115 max.
−125 max.
−140 max.
Phase noise (@32.768MHz)
The value of phase noise changes when the frequency changes.
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Dimensions
8.9±0.1
8.9±0.1
7.62±0.1
PIN Connections
#1
#2
#3
#4
#5
#6
#7
VCONT
VREF
VCC
OUTPUT
ALARM
GND(Heating)
GND
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List of Options
Power supply voltage
Nominal frequency (MHz)
DC +5V
10 to 40
25.4
For details of options, please feel free to contact
our sales representatives.
2.5
22
21.5
#1
#2
#3
2.5
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List of Ordering Codes
Frequency
(MHz)
32.768
Ordering Code
NH25M22WA-32.768M-NSA3425A
15.7
#7 #6
#5 #4
Tolerance ±0.2mm
The above frequencies are NDK’ s standard frequencies.
Frequencies other than the above are available. Feel free to
contact our sales representatives.
(1.0)
co44_080418_NH25M22WA_e1
NDK [ NIHON DEMPA KOGYO ]
