Model 638
Ultra Low Jitter LVPECL or LVDS Clock
Features
. Ceramic Surface Mount Package
. Ultra Low Phase Jitter Performance, 100fs Typical
. Fundamental or 3rd Overtone Crystal Design
. Frequency Range 80 – 170MHz *
. +2.5V or +3.3V Operation
Part Dimensions:
7.0 × 5.0 × 2.0mm • 178.462mg
. Output Enable Standard
. Tape and Reel Packaging, EIA‐418
Standard Frequencies, 100fs Maximum
‐ 125.00MHz
‐ 155.52MHz
‐ 156.25MHz
‐ 161.1328MHz
Applications
. SerDes
. PON
. Ethernet/GbE/SyncE
. Fiber Channel
* Check with factory for availability.
. Storage Area Networking
. Broadband Access
. SONET/SDH/DWDM
. Test and Measurement
Description
CTS Model 638 is a low cost, high performance clock oscillator supporting differential LVPECL or LVDS outputs.
Employing the latest IC technology, M638 has excellent stability and low jitter/phase noise performance.
Ordering Information
Frequency
Stability
3
Temperature
Supply
Voltage
3
Frequency Code
[MHz]
Output Type
Packaging
T
Model
Range
I
638
P
XXX or XXXX
Output
Stability
Voltage
+2.5Vdc
+3.3Vdc
Code
P
L
E
V
Code
Code
2
3
±20ppm 2
±25ppm
±50ppm
±100ppm
LVPECL ‐ Pin 1 Enable
LVDS ‐ Pin 1 Enable
LVPECL ‐ Pin 2 Enable
LVDS ‐ Pin 2 Enable
6
5
3
2
Frequency
Product Frequency Code 1
Temp. Range
‐10°C to +60°C
‐20°C to +70°C
‐40°C to +85°C
Packing
1k pcs./reel
Code
Code
Code
T
A
C
I
Notes:
1] Refer to document 016‐1454‐0, Frequency Code Tables. 3‐digits for frequencies <100MHz, 4‐digits for frequencies 100MHz or greater.
Consult factory for availability of 6I Stability/Temperature combination.
2]
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
DOC# 008‐0539‐0 Rev. A
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©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.