Data Sheet

Model 125
SSOCXO
Compensated OCXO
APPLICATIONS
Telecom Switching
Base Stations/Picocells
Wireless Communications
UMTS
Test & Measurement
Timing and Synch
FEATURES
•
•
•
•
•
•
•
1 ppb frequency stability
Very low aging
5 MHz or 10 MHz
12V operation
Low Phase Noise
Electrical Frequency Control
Fully compliant to RoHS Directive 2011/65/EU
DESCRIPTION
CTS Model 125 is a high performance ovenized
crystal oscillator. The high quality CTS SC-cut
quartz crystal used in this OCXO design offers
high stability, low phase noise, and very low
aging, making it an ideal frequency or timing
reference for Telecommunications and Test &
Measurement applications.
ELECTRICAL SPECIFICATIONS
Parameter
Conditions & Remarks
Min
Typical
Max
Unit
Operating Conditions
Standard Frequencies
fNOM
Operating Temperature Range
TOP
-10
-
80
°C
Supply Voltage
12.0 V
11.4
12.0
12.6
Vdc
during warm up
-
4
6
W
steady state @ 25°C
-
2
3
W
45
50
55
ohms
Power Consumption
Load
Model 125 - Rev. A
Output to Ground
5MHz, 10 MHz
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Page 1 of 4
©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Model 125
SSOCXO
Compensated OCXO
Parameter
Conditions & Remarks
Min
Typical
Max
Unit
Initial Calibration
∆f/fNOM; TA=25°C;
at time of shipment @ Vc = 2.5V
-
-
±100
ppb
vs Temperature
TA= -10° to 80°C
-
0.5
1
ppb pk-pk
vs Supply Voltage
± 5%
-
-
± 0.1
ppb
vs Load
± 10%
-
-
± 0.2
ppb
at time of shipment
-
0.05
± 0.1
ppb/day
first year
-
-
± 30
ppb/year
± 300
ppb/20 yrs
Frequency Stability
Aging, after 30 days operation
20 years, total
Short Term Stability
Allan Deviation
Warm-Up Time
In Still Air @ 1 sec tau
-
-
0.01
ppb
In Still Air @ 10 sec tau
-
-
0.01
ppb
TA=25°C; to within 10 ppb of
freq. @ 60 min
-
5
10
minutes
1 Hz
-
-85
-
dBc/Hz
Phase Noise (Typical for 10 MHz)
10 Hz
-
-120
-
dBc/Hz
100 Hz
-
-140
-
dBc/Hz
1 kHz
-
-145
-
dBc/Hz
10 kHz
-
-145
-
dBc/Hz
-
-
-70
dBc
Zi
30
-
-
kΩ
VC ; positive monotonic
transfer
0
-
5
Vdc
± 250
-
-
ppb
Spurious
Electronic Frequency Control
Input Impedance
Control Voltage Range
Tuning Range
Tuning Coverage
Linearity
20
-
-
years
-
-
±10
%
Output Parameters
Sine Wave
Output Waveform
Amplitude
2
5
8
dBm
Harmonics
-
-35
-25
dBc
Sub-harmonics
-
-35
-25
dBc
Model 125 - Rev. A
Sine Wave into 50 Ohm
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Page 2 of 4
©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Model 125
SSOCXO
Compensated OCXO
Model 125 Part Number Generator:
Frequency in MHz
Model 125 -
___ . ________
Example: 125-10.0000
Environmental and Mechanical
Soldering
Hand or Wave Solder only; Maximum Solder Temperature 300°C for 10 Seconds Max.
MSL
Level 1
50 G’s 11 ms, Halfsine, 3 shock per direction,
per IEC 68-2-27 Test Ea / Severity 50A
Shock :
Sinusoidal Vibration :
0.06” D.A. or 10 G’s Peak, 10 to 500 Hz,
per MIL-STD-202F, Method 204D, Test Condition A.
Random Vibration :
5.35 G’s RMS. 20 to 2000 Hz, 1 cycle / axis, 10 minutes each axis.
Seal :
Hermetic
Marking Permanency :
per MIL-STD-202F, Method 215J.
Attachment Method :
Through-Hole
Lead Finish
Matte Tin plated, 100 microinches minimum over 100 microinches minimum Ni underplate
Storage Temperature
Range:
-40°C to +85°C
RoHS
Lead-free and fully compliant to RoHS Directive 2011/65/EU
Model 125 - Rev. A
www.ctscorp.com
Page 3 of 4
©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Model 125
SSOCXO
Compensated OCXO
MECHANICAL SPECIFICATIONS
.866 MAX
[22.0 mm]
Model 125 - Rev. A
www.ctscorp.com
Page 4 of 4
©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
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