1180026-XXX
20.000 MHz OCXO
Stratum 3E
♦Frequency
Stability to Stratum 3E of GR-1244
♦Recommended
for or use with
Zarlink
SONET/SDH System Synchronizer Chip Sets
♦+3.3Vdc
or +5.0Vdc Operation
♦Precision
Low Aging “SC” Cut Crystal
♦Through-Hole
or Surface Mount Configuration
♦RoHS
Compliant
Electrical Characteristics
Parameter
Power Requirements
Power Supply
¹
Turn-On Power
Steady State Power
Start-Up Time
Warm-Up Time
Frequency Stabilities
Center Frequency
Initial Tolerance
Frequency vs. Temperature
Frequency vs. Voltage
Frequency vs Time (Aging)
24 Hour Holdover Stability
Total Free-Running
Accuracy
Waveform: HCMOS Output
Symmetry
Amplitude
Rise/Fall Times
Load
Sub-Harmonics
Phase Noise
Offset = 1 Hz
10 Hz
100 Hz
1 KHz
10 KHz
1
-70
-103
-130
-140
-142
Sym
Vo
tr, tf
RL
@ 50% Level
Logic “1”
Logic “0”
20% to 80%
Output to Ground
40
0.9Vcc
0.1Vcc
4
10KΩ // 15pF
-25
-60
-100
-125
-130
-135
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
7
50
60
%
V
V
nSec
Vcc
Pmax
Pss
Tsu
Twu
±
5%
±
5%
Vcc = Max. Std. Load
Vcc = Max Std. Load @ +25°C
To 90% Amplitude
To meet full spec @ +25°C
3.135
4.75
3.30
5.0
3.5
1.5
50
15
3.465
5.25
4.0
Vdc
Vdc
W
W
mSec
minutes
Sym
Conditions
Min
Typical
Max
Unit
f
nom
f
cal
∆f/∆Temp
∆f/∆Vcc
∆f/∆Time
∆f/24Hr
∆f/Life
Ta = +25°C (At time of Shipment)
Operating Temperature
¹
Vcc
±
5%
per Day
20 years
Inclusive of Temperature, Supply
Variation and 24 hours Aging
All Conditions for 20 years
(Reference to f
nom
)
20.000
±
0.3
±
6
±
1
±
1
±
8
±
1.5
±
10
±
2.1
±
0.5
±
8
MHz
ppm
ppb
ppb
ppb
ppm
ppb
ppm
See Dash Number Table for Voltage and Operating Temperature
♦♦♦
CTS
♦
171 Covington Dr.
♦
Bloomingdale, IL 60108
♦
800-757-6686
♦
www.ctscorp.com
♦♦♦
REVISION X4
Page 1 of 4
1180026-XXX
20.000 MHz OCXO
Stratum 3E
Dash Number Table (CTS Dash No. = -XXX)
No Air-Flow Shield
CTS
Dash No.
-001
-002
-003
-004
-005
-006
-007
-008
Package
Specification
Figure 1
Figure 1
Figure 1
Figure 1
Figure 2
Figure 2
Figure 2
Figure 2
Vcc
+5.0 Vdc
+5.0 Vdc
+3.3 Vdc
+3.3 Vdc
+5.0 Vdc
+5.0 Vdc
+3.3 Vdc
+3.3 Vdc
Operating
Temperature Range
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
CTS
Dash No.
-011
-012
-013
-014
-015
-016
-017
-018
With Air-Flow Shield
Package
Specification
Figure 3
Figure 3
Figure 3
Figure 3
Figure 4
Figure 4
Figure 4
Figure 4
Vcc
+5.0 Vdc
+5.0 Vdc
+3.3 Vdc
+3.3 Vdc
+5.0 Vdc
+5.0 Vdc
+3.3 Vdc
+3.3 Vdc
Operating
Temperature Range
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
Complete CTS orderable part number includes 1180026-XXX (where –XXX = CTS Dash No. from this table)
Environmental and Mechanical Requirements
Storage Temperature :
Reflow Soldering :
Shock :
Vibration :
Case :
Seal :
Surface Mount Base :
MSL :
6/6 RoHS Compliance :
-55°C to +125°C
Will withstand 240°C for 20 seconds
50 G’s 11 ms, Pulse, 3 shocks per axis
10G’s Peak, 20 to 2000 Hz
Dual-in-Line
Resistance Weld
High Temperature FR-4
1
This product is fully compliant to RoHS Directive 2002/95/EC
♦♦♦
CTS
♦
171 Covington Dr.
♦
Bloomingdale, IL 60108
♦
800-757-6686
♦
www.ctscorp.com
♦♦♦
REVISION X4
Page 2 of 4
京公网安备 11010802033920号
EEWORLD
