Data Sheet

1180026-XXX
20.000 MHz 1x1 OCXO
Stratum 3E
FEATURES
• Compliant to Stratum 3E per GR-1244-Core
and GR-253-Core
• For use with Zarlink SONET/SDH/10GbE
System Synchronizer/SETS
• 20 MHz
• 3.3V or 5.0V operation
• Low Jitter/Phase Noise
• Through-Hole or Surface Mount Configuration
• Fully compliant to RoHS Directive 2002/95/EC
DESCRIPTION
The CTS model 1180026 is a low cost, small size,
high performance OCXO. The high quality CTS
Quartz Crystal used in this OCXO offers high
stability and low jitter/phase noise, making it the
ideal choice for any telecommunications system.
Applications: Telecom Switching
Wireless Communication
Timing over Packet
ELECTRICAL SPECIFICATIONS
Parameter
Conditions & Remarks
Min
Typical
Max
Unit
Operating Conditions
Operating Temperature Range
Supply Voltage, Vcc (Note 1)
TOP
3.3V
5.0 V
-40
-
+85
°C
3.135
4.750
3.3
5.0
3.465
5.250
Vdc
during warm up
-
3.5
4.0
W
steady state @ +25°C
-
1.5
Power Consumption
Start-Up Time
To 90% output amplitude
Load
Output to Ground
5
Frequency
fNOM
Initial Tolerance
∆f/fNOM; TA=25°C;
at time of shipment
W
50
mSec
10
15
pf
-
20.000
-
MHz
-
± 0.3
± 0.5
ppm
-
7
10
ppb, pk-pk
±1
ppb/day
ppm
Frequency Stability
Frequency vs Temperature
vs Supply Voltage
Aging
24-Hour Holdover Stability
(Note 2)
Total Free-Run Accuracy
1180026 Data Sheet
Over Operating Temperature,
pk-pk (Note 1)
Vcc ± 5%
Per day, at time of shipment
-
±1
-
±0.5
ppb
20 years
-
-
±1
At constant temperature
Inclusive of variable operating
temp and 24 hours aging drift
(after 8 hours operation, following
24 hours off period – see Note 2)
Under all operating conditions for
20 years. Ref to fNOM
-
± 0.5
±1
-
-
11
-
-
±2.1
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ppb, pk-pk
ppm
Rev. E
1180026-XXX
20.000 MHz 1x1 OCXO
Stratum 3E
Parameter
Conditions & Remarks
Min
Typical
Max
Unit
Frequency Stability continued
Short Term Stability
ADEV (in still air)
Wander Generation
1.0 sec
-
< 0.01
0.02
ppb
10 sec
-
0.01
0.03
ppb
100 sec
-
0.02
0.05
ppb
1000 sec
-
0.05
0.1
ppb
10,000 sec
-
0.07
0.2
ppb
MTIE and TDEV per Stratum 3E requirements of Telcordia GR-1244-CORE and GR-253-CORE
TA=25°C; to within 10ppb of
freq. @ 60 min
Warm-Up Time
-
-
15
minutes
-
-70
-103
-60
-100
dBc/Hz
dBc/Hz
Phase Noise
Offset =
1 Hz
10 Hz
100 Hz
-
-130
-125
dBc/Hz
1 kHz
-
-140
-130
dBc/Hz
10 kHz
-
-142
-135
dBc/Hz
-
-
-25
dBc
Sub-Harmonics
Output Parameters
HCMOS
Output Signal Square Wave
VOL
-
-
10%VCC
VOH
90% VCC
-
-
Amplitude
Vdc
Rise / Fall Times
20% to 80% @ 10pf load
-
4
7
ns
Duty Cycle
@ 50 % of output signal
40
50
60
%
Note 1:
See Dash Number Table below for Input Supply Voltage and Operating Temperature Range options
Note 2:
8 hours operation required if off for 24 hours
24 hours operation required if off for up to 1 week
48 hours operation required if off for up to 1 month
Typical Wander Generation MTIE Performance of 1180026-018
Typical Wander Generation TDEV Performance of 1180026-018
100
100
10
MTIE
10
nSec
TDEV
nSec
1
0.1
1
0.01
0.1
1
10
100
1000
10000
100000
0.01
0.01
0.1
1
10
Seconds
MTIE
100
1000
10000
100000
Seconds
GR-1244 Mask
TDEV
GR-1244 Mask
Wander Generation and Holdover Test Report available upon request
Dash Number Table (CTS Dash No. = –XXX)
1180026 Data Sheet
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Rev. E
1180026-XXX
20.000 MHz 1x1 OCXO
Stratum 3E
No Air-Flow Shield
With Air-Flow Shield
Vcc
Operating
Temperature Range
CTS
Dash No.
Package
Specification
Vcc
Operating
Temperature
Range
Figure 1
+5.0 Vdc
0°C to +70°C
-011
Figure 3
+5.0 Vdc
0°C to +70°C
-002
Figure 1
+5.0 Vdc
-40°C to +85°C
-012
Figure 3
+5.0 Vdc
-40°C to +85°C
-003
Figure 1
+3.3 Vdc
0°C to +70°C
-013
Figure 3
+3.3 Vdc
0°C to +70°C
-004
Figure 1
+3.3 Vdc
-40°C to +85°C
-014
Figure 3
+3.3 Vdc
-40°C to +85°C
-005
Figure 2
+5.0 Vdc
0°C to +70°C
-015
Figure 4
+5.0 Vdc
0°C to +70°C
-006
Figure 2
+5.0 Vdc
-40°C to +85°C
-016
Figure 4
+5.0 Vdc
-40°C to +85°C
-007
Figure 2
+3.3 Vdc
0°C to +70°C
-017
Figure 4
+3.3 Vdc
0°C to +70°C
-008
Figure 2
+3.3 Vdc
-40°C to +85°C
-018
Figure 4
+3.3 Vdc
-40°C to +85°C
CTS
Dash No.
Package
Specification
-001
Complete CTS orderable part number includes 1180026-XXX (where –XXX = CTS Dash No. from this table)
Environmentals
Reflow Soldering
Maximum reflow temperature, 245°C for 10 seconds, 2 40°C for 20 seconds, per
IPC/JEDEC J-STD-020C
MSL
Level 1
RoHS
Lead-Free. Fully compliant to RoHS Directive 2002/95/EC
Shock
50 G’s, 11 msec, 500 G’s, 1msec, 5 shocks in each of 6 directions
Sinusoidal Vibration
10 Hz to 55 Hz with a double amplitude of 0.75mm, 10 g’s peak from 55 Hz to 2000Hz, for
30 minutes in each of three perpendicular directions
Random Vibration
5.35 G’s RMS. 20 to 500 Hz, per MIL-STD-202F,
Method 214, 15 minutes each axis.
Seal
Hermetic resistance weld
Marking Permanency
per MIL-STD-202F, Method 215J.
Surface Mount Base
High Temperature FR-4
Storage Temperature
-55°C to +125°C
PIN #
FUNCTION
1
RF OUTPUT
4
GROUND / CASE
7
N/C
8
DO NOT CONNECT
14
Vcc
1180026 Data Sheet
Dimension Key: [MM] Inch
Tolerance unless otherwise specified : [± .13] ± .005
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Rev. E
1180026-XXX
20.000 MHz 1x1 OCXO
Stratum 3E
MECHANICAL SPECIFICATIONS
PACKAGE DRAWINGS
Figure 1
CTS
Figure 2
**
CTS
1180026-XXX
20.000 MHz
**
1180026-XXX
20.000 MHz
TEST #
1180026 Data Sheet
Page 4 - 5
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Rev. E
1180026-XXX
20.000 MHz 1x1 OCXO
Stratum 3E
Figure 3
CTS
Figure 4
**
CTS
1180026-XXX
20.000 MHz
**
1180026-XXX
20.000 MHz
TEST #
1180026 Data Sheet
Page 5 - 5
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Rev. E
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