C4550A2-0275
Typical Applications
SONET/SDH Transmission Systems
Features
Low Profile, Compact Package
Stratum 3E Performance
SC-Cut Crystal
OCXO
Description
The C4550A2-0275 has been designed to meet the Holdover requirements for a Stratum 3e Clock
source as called out in GR-1244-CORE, per Table 3-1 as described in Sections 5.2 and 9.1.
20.000 MHZ
±
1.5 ppm @ Time of Shipment
Nominal Frequency:
Initial Accuracy (Time of Shipment) :
Frequency stabilities
Parameter
Value
Condition
vs. operating temperature range
vs. supply voltage
vs. short-term
vs. holdover / Day
vs. aging / 20 Years
RF output
Parameter
±
10 ppb
< ± 2 ppb
1e-11/sec
< ± 1 ppb
< ± 2.0 ppm
-40° to +85°
C
C
1% change in voltage
Allan Variance 1 sec Tau
<
±
3° change in 24hrs
C
Value
Condition
Waveform
Load
Duty Cycle
Rise/Fall Time
Supply Voltage
Parameter
HCMOS
15 pF
45/55%
<10nSec
@ 50% level
10% to 90% level
Value
Condition
Supply voltage (Vs)
Power consumption steady state
Power consumption during warm up
Additional Parameters
Parameter
+3.3VDC ± 10%
< 1.5 watts
< 3.3 watts
@ 25°C
Value
Condition
Phase Noise
Warm-up time
<-130 dBc/Hz
<-145 dBc/Hz
<-150 dBc/Hz
<-150 dBc/Hz
< 3min
100Hz
1KHz
10KHz
100KHz
@25° to final frequency
C
(1 Hour) within ± 0.1ppm
Vectron International
·
www.vectron.com
Vectron International
Headquarters
267 Lowell Road
Hudson, New Hampshire 03051
+1-888-328-7661 tel
+1-888-329-8328 fax
1-26-11 drs
Vectron international GmbH & Co. KG
Landstrasse
D-74924 Neckarbischofsheim
Germany
+49-07268-801-0 tel
+49-07268-801-281 fax
v.2011-01-26 · page 1 of 2
Vectron Asia Pacific Sales Office
Unit 3119 31st Floor, Jin Mao Tower, 88
Century Boulevard, Shanghai,
P.R. China 200120
+86 21 28909740 tel.
+86 21 28909240 fax
Vectron International LLC.
100 Watts Street
Mount Holly Springs, PA 17065
USA
+1-717-486-3411 tel
+1-717-486-5920 fax
C4550A2-0275
ADEV
7e-12
8e-12
20e-12
60e-12
TDEV
5e-12
50e-12
600e-12
3000e-12
OCXO
1sec tau
10sec tau
100sec tau
1000sec tau
1sec tau
10sec tau
100sec tau
1000sec tau
Notes
1
Unless otherwise stated all values are valid after warm-up time and refer to typical conditions
for supply voltage, frequency control voltage, load, temperature (25°
C)
2
This is a Zarlink custom part – restricted for Zarlink customers
Enclosure
Package Codes:
Code
Height “H”
A2
13.40
Pin Length “L”
6.35
MARKING SURFACE
"H" MAX
TYP
0.64±0.13
TYP
0.76
"L" .50
SQ CORNER
INDICATES
PIN 1
25.4 0.38
1
2
3
25.4 0.38
11.43 SQ
19.05 SQ
5
4
Dimensions: mm
Pin Connections
1
2
3
4
5
RF Output
Ground (Case)
NC
NC
Supply Voltage Input (Vs)
Vectron International
·
www.vectron.com
Vectron International
Headquarters
267 Lowell Road
Hudson, New Hampshire 03051
+1-888-328-7661 tel
+1-888-329-8328 fax
1-26-11 drs
Vectron international GmbH & Co. KG
Landstrasse
D-74924 Neckarbischofsheim
Germany
+49-07268-801-0 tel
+49-07268-801-281 fax
v.2011-01-26 · page 2 of 2
Vectron Asia Pacific Sales Office
Unit 3119 31st Floor, Jin Mao Tower, 88
Century Boulevard, Shanghai,
P.R. China 200120
+86 21 28909740 tel.
+86 21 28909240 fax
Vectron International LLC.
100 Watts Street
Mount Holly Springs, PA 17065
USA
+1-717-486-3411 tel
+1-717-486-5920 fax
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