Crystal Oscillator
Oven Controlled Crystal Oscillator (OCXO)
for Fixed Communication Equipment
NH25M22WG
Main Application
●ꢀBaseꢀstationsꢀforꢀsystemꢀmobileꢀcommunicationsꢀꢀꢀ●ꢀOpticalꢀtransmissionꢀsystem
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●ꢀMeasuringꢀinstrumentꢀꢀꢀꢀꢀꢀꢀ●ꢀSynthesizerꢀꢀꢀꢀꢀ●ꢀExchangerꢀꢀꢀꢀꢀꢀꢀꢀ●ꢀHigh-endꢀrouter
Features
●ꢀLowꢀpowerꢀconsumption.
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●ꢀVeryꢀquickꢀstabilizationꢀtime.
●ꢀExcellentꢀlong-termꢀfrequencyꢀstability.
●ꢀLowꢀnear-carrierꢀphaseꢀnoiseꢀcharacteristics.
Specifications
■
Model
NH25M22WG
10
Item
NominalꢀFrequencyꢀꢀfnomꢀꢀ(MHz)
SupplyꢀVoltageꢀꢀVccꢀꢀ(V)
+3.3
+5
LoadꢀImpedanceꢀꢀCLꢀꢀ(pF)
15
OperatingꢀTemperatureꢀRangeꢀꢀToprꢀꢀ(°C)
StorageꢀTemperatureꢀRangeꢀꢀTstrꢀꢀ(°C)
0ꢀtoꢀ+ꢀ70
–40ꢀtoꢀ+ꢀ85
0ꢀtoꢀ+ꢀ70
–40ꢀtoꢀ+ꢀ85
–40ꢀtoꢀ+ꢀ85
Max.ꢀ3.0
atꢀstart
PowerꢀConsumptionꢀꢀPCCꢀꢀ(W)
whenꢀstable,ꢀatꢀ+25ꢀ°C
Max.ꢀ1.3
atꢀ+25°C,ꢀVcontꢀ=ꢀCenter,ꢀbeforeꢀ
shipment
FrequencyꢀToleranceꢀꢀΔf/fnom
Max.ꢀ200×10-9
Frequency/TemperatureꢀCharacteristicsꢀꢀΔf/f
Frequency/VoltageꢀCoefficientꢀΔf/f
atꢀOperatingꢀTemperatureꢀRange
VCCꢀ±ꢀ5%
Max.ꢀ±10×10–9
Max.ꢀ±3×10–9
9
Max.ꢀ±1×10– ꢀ/ꢀday
Long-termꢀFrequencyꢀStabilityꢀꢀ Basedꢀonꢀfrequencyꢀafterꢀ30ꢀdaysꢀ
9
Max.ꢀ±50×10– ꢀ/ꢀyear
Δf/f
operation
Timeꢀwithinꢀspecifiedꢀfrequencyꢀtoleranceꢀ
afterꢀ powerꢀ onꢀ atꢀ +25°C,ꢀ basedꢀ onꢀ
frequencyꢀafterꢀ60minutesꢀoperation.
9
StabilizationꢀTimeꢀ(min.)
Max.ꢀ3ꢀ/ꢀwithinꢀ±ꢀ200×10–
Vcont=+1.4V±1.4V
Min.±500×10–9
V
cont=+1.65V±1.65V
Min.±500×10–9
Vcont=+2V±2V
Min.±500×10–9
Vcont=+2.5V±2.5V
Min.±500×10–9
FrequencyꢀControlꢀRangeꢀꢀꢀΔf/f
FrequencyꢀChangeꢀPolarity
Positive
LVCMOS
HCMOS
LVCMOS
OutputꢀVoltage
VOLꢀ:ꢀMax.+0.4ꢀV
VOHꢀ:ꢀMin.+2.4ꢀV
VOLꢀ:ꢀMax.+0.5ꢀV VOLꢀ:ꢀMax.+0.4ꢀV
VOHꢀ:ꢀMin.+4.5ꢀV VOHꢀ:ꢀMin.+2.4ꢀV
Symmetryꢀ(%)
atꢀ(VOHꢀ+ꢀVOL)ꢀ/ꢀ2
40ꢀtoꢀ60
NSC5127B NSC5128A
SpecificationꢀNumber
NSC5127A
NSC5128B
Dimensions
Reference Value
■
■
OffsetꢀFrequency
1ꢀHz
dBc/Hz
mm
17.8 0.1
7.62 0.1
Typ.ꢀ−100
Typ.ꢀ−125
Typ.ꢀ−142
Typ.ꢀ−152
Typ.ꢀ−152
Terminal land connections
10ꢀHz
PhaseꢀNoise
(atꢀ10ꢀMHz)
#1
#2
#3
#4
#5
#6
#7
Vcont
100ꢀHz
DNC
(Don't connect)
VCC
1ꢀkHz
10ꢀkHz
OUTPUT
DNC
DNC
(Don't connect)
(Don't connect)
GND
22.0
Terminal numbers are not printed.
#1 #2
#7 #6
#3
Weꢀofferꢀdedicatedꢀtoolꢀforꢀevaluationꢀofꢀthisꢀproduct
#5 #4
Pleaseꢀspecifyꢀtheꢀmodelꢀname,ꢀfrequency,ꢀandꢀspecificationꢀnumberꢀwhenꢀ
youꢀorderꢀproducts.ꢀ
Forꢀfurtherꢀquestionsꢀregardingꢀspecifications,ꢀpleaseꢀfeelꢀfreeꢀtoꢀcontactꢀus.
2.5
Toleranceꢀ±0.3
Tolerance: 0.3
Itꢀmightꢀbeꢀprintedꢀmanegementꢀcodeꢀtoꢀtheꢀbottom.
1706E_NH25M22WG_e