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Crystal Oscillator
NH25M25TE
Oven Controlled Crystal Oscillator (OCXO)
for Fixed Communication Equipment
■ Main Application
● Base stations for system mobile communications ● Optical transmission system
● Measuring instrument
■ Features
● Synthesizer
● Exchanger
● High-end router
● Supports wide temperature range. (-40 to +85°C)
● Excellent long-term frequency stability. (10MHz : Max. ±30×10−9/year)
20MHz : Max. ±80×10−9/year)
● Low near-carrier phase noise characteristics. (-100dBc / Hz at 1Hz offset)
● Hermetic sealing package for excellent environmental-proof
performance.
■ Specifications
Model
Item
Measurement condition
Nominal Frequency (MHz)
Supply Voltage [VCC] (V)
NH25M25TE
10
20
+5 ±5 %
+3.3 ±5 %
at start
Power Consumption (W)
Max. 3
when stable (+25 °C)
Max. 1.3
HCMOS level
VOL Max. 0.5 V, VOH Min. 3.5 VVOL Max. 0.3 V, VOH Min. 2.4 V
40 to 60
Output Voltage
Symmetry (%)
at+(VOH + VOL) / 2
Load Impedance (pF)
15
Operating Temperature Range (°C)
−40 to +85
Storage Temperature Range (°C)
−40 to +85
Stabilization Time (Frequency Stability) within
±500 ×10−9 after power on at +25°C ,
based on frequency after 60minutes operation.
Stabilization Time (Frequency Stability) within
±100 ×10−9 after power on at +25°C ,
based on frequency after 60minutes operation.
Stabilization Time
Max. 90 seconds
Max. 3 minutes
Max. ±1×10−9/day
Long-term Frequency Stability
Based on frequency after 30 days operation
Frequency/Temperature Characteristics
−40 to +85 °C
Max. ±10×10−9
Frequency/Voltage Coefficient
(*1)
Max. ±3×10−9
Specification Number
20MHz : VCC +3.3 V ±5 %
■ Dimensions
25.4
Terminal land connections
OUTPUT
DNC (Don't connect)
GND
DNC (Don't connect)
DNC (Don't connect)
Vref
NC
DNC (Don't connect)
VCC
12.1
12.8
19
25.4
#1
#2
#4
#6
#7
#13
#15
#17
#19
#19 #17 #15 #13
Phase Noise
(at 10 MHz)
Phase Noise
(at 20 MHz)
Short-term
Frequency
Stability
#6 #7
Offset Frequency
dBc/Hz
1 Hz
Typ. −100
10 Hz
Typ. −127
100 Hz
Typ. −143
1 kHz
Typ. −148
10 kHz
Typ. −150
Offset Frequency
dBc/Hz
1 Hz
Typ. −85
10 Hz
Typ. −115
100 Hz
Typ. −140
1 kHz
Typ. −145
10 kHz
Typ. −145
τ=1
Typ. 8×10−12
We offer a test instrument(charge) for measuring accurately.
2.4
1.9
NSC5063B
■ Reference Value
mm
19
6.4
#4
Max. ±80×10−9/year
NSC5063A
(*1) 10MHz : VCC +5 V ±5 %
#1 #2
Max. ±30×10−9/year
Please specify the model name, frequency, and specification number
when you order products.
For further questions regarding specifications, please feel free to
contact us.
Tolerance ±0.5 mm
-9-
1604A_NH25M25TE_e