2.ꢀ Frequencyꢀstabilityꢀvs.ꢀChangeꢀinꢀtemperature,ꢀreferencedꢀtoꢀ25C.
3.ꢀ Frequencyꢀstabilityꢀperꢀ5%ꢀchangeꢀinꢀsupplyꢀvoltage.
4.ꢀ Atꢀtheꢀtimeꢀofꢀshipmentꢀafterꢀ48ꢀhoursꢀofꢀoperation.
5.ꢀ Inclusiveꢀofꢀcalibration,ꢀoperatingꢀtemperatureꢀrange,ꢀsupplyꢀvoltageꢀchange,ꢀshockꢀandꢀvibrationꢀ20ꢀyearsꢀaging.
6.ꢀ Typicalꢀphaseꢀnoise,ꢀresultsꢀwillꢀvaryꢀdependingꢀonꢀcenterꢀfrequency.ꢀTheꢀphaseꢀnoiseꢀshownꢀareꢀtypicalꢀforꢀ20ꢀMHz.
7.ꢀ Measuredꢀ @ꢀ 25C,ꢀ withinꢀ 3ꢀ minutes,ꢀ theꢀ unitꢀ willꢀ beꢀ withinꢀ +/-0.1ppmꢀ ofꢀ itsꢀ referenceꢀ frequency,ꢀ measuredꢀ afterꢀ 30ꢀ minutesꢀ
ꢀ ꢀ ofꢀcontinuousꢀoperationꢀatꢀaꢀstableꢀ25C.
Cx225
Cx262
1 of 4
1 of 2
1.ꢀ Initialꢀcalibrationꢀ@ꢀ25C.ꢀ
Available at Digi-Key**
www.digikey.com
Precision OCXO
OX400-620LF
Preliminary
2 1 11 C omprehensive Drive
Aurora, Illinois 60505
Phone: 630 - 8 5 1 - 4 722
Fax: 630 - 8 51 - 5 040
Description:
Features:
•ꢀ OCXOꢀ-ꢀFixedꢀFrequency
•ꢀ 3.3VꢀOperation
•ꢀ L V CMOS
•ꢀ FrequencyꢀStability:ꢀ±±2ppb
•ꢀ T e mperatureꢀRange:ꢀ-42ꢀtoꢀ85°C
•ꢀ LowꢀPhaseꢀNoise
•ꢀ 14ꢀPinꢀDIPꢀPackage
•ꢀ RoHSꢀCompliantꢀ/ꢀLeadꢀFree
The Connor-Winfield OX400-620L F ,
a 14-Pin DIP Oven Stabilized
Crystal Oscillator (OCXO), is
a precise frequency standard
excellent for use in cellular
www.conwin.com
base stations, test equipment,
Synchronous Ethernet, VS A T, a nd
Stratum 3 applications.
US Headquarters:
630-851-4722
European Headquarters:
+353-61-472221
Absolute Maximum Ratings
Parameterꢀ
Minimumꢀ Nominalꢀ
Maximumꢀ
125
Unitsꢀ
°C
Notes
Notes
Storage T e mperature
Supply Voltage (Vcc)
-55
-
-
-0.5
4.5
Vdc
Operating Specifications
Minimumꢀ Nominalꢀ
Parameterꢀ
Maximumꢀ
Unitsꢀ
MHz
Nominal Frequency (Fo)
Frequency Calibration
Frequency Stability
20.0 and 24.576
-0.3
-20
-
0.3
20
10
5
ppm
1, 4
2
3
4
-
ppb
Frequency vs Change in Supply Voltage -10
-
ppb
Aging Daily
Aging 1st Y e ar
-5
-0.3
-
ppb
-
0.3
1.5
85
3.47
2.2
1
ppm
T o tal Frequency T o lerance (20 years) -1.5
-
ppm
5
Operating T e mperature Range
Supply Voltage (Vcc)
-40
3.13
-
°C
3.3
Vdc
Supply Power (-40 to 85°C)
Phase Jitter (BW = 10KHz to Fo/2)
Period Jitter
-
-
-
-
-
-
-
-
-
-
-
-
-
Watts
ps RMS
ps RMS
5
Allan Variance (1 second)
SSB Phase Noise at 10Hz offset
SSB Phase Noise at 100Hz offset
SSB Phase Noise at 1kHz offset
SSB Phase Noise at 10kHz offset
Start-Up Time Oscillator
5.0E-11
-100
-120
-140
-150
-
-
-
dbc/Hz
dbc/Hz
dbc/Hz
dbc/Hz
ms
6
6
6
6
-
-
-
35
3
Warm-Up Time
-
Minutes
7
L V CMOS Output Characteristics
Parameterꢀ
Load
Minimumꢀ Nominalꢀ
Maximumꢀ
Unitsꢀ
Notes
-
15
-
pF
Voltage:
High (Voh)
2.60
-
-
-
-
Vdc
Vdc
Low (Vol)
0.40
Current
High (loh)
-4
-
45
-
-
-
50
-
-
4
55
6.5
mA
mA
%
Low (lol)
Duty Cycle at 50% of Vcc
Rise / Fall Time: 10% to 90%
ns
Package Characteristics
OX400-Series DIP Package
14 Pin DIP Hermetically Sealed Grounded Welded Package
Bulletin
Bulletin
Page
Page
Revision
Revision
P04
03
07 Sep 2011
04 Oct 2017
Date
Date
