Model 581
Stratum 3 HCMOS TCXO/VC
CXO/VC/VC-TCXO
Features
Ceramic Surface Mount Package
Fundamental Crystal Design
Frequency Range 10 – 52MHz *
Operating Voltage +2.5V, +3.0V and +3.3V
Frequency Stability, Overall ±4.6ppm
Operating Temperature Range to -40°C to +85°C
Voltage Control Option for Frequency Tuning [VC-TCXO]
Enable Function Option
Tape and Reel Packaging, EIA-481
Part Dimensions:
5.0 × 3.2 × 1.65mm • 83mg
Standard Frequencies – see Page 8 for common frequencies.
* Check with factory for availability of frequencies not listed.
Applications
Sub 6GHz 5G Small Cell
IEEE 1588 Timing
Synchronous Ethernet
Base Stations, Femtocells
Mobile Communication
Wireless Connectivity
IoT and IIoT
GPS
Test and Measurement
Description
CTS Model 581 is a high performance Temperature Compensated Crystal Oscillator [TCXO] suitable for
applications requiring Stratum 3 performance. Employing analog IC technology with HCMOS output and high
order temperature compensation engine; coupled with a fundamental quartz crystal M581 has excellent stability
and low jitter/phase noise performance.
Ordering Information
Supply
Voltage
L
Model
5 81
E
Code
Blank
E
Function
No Enable
Enable
[MHz]
X XX
Code
Voltage
+2.5Vdc
+3.0Vdc
+3.3Vdc
Frequency
2
Stability
X2
Frequency
Product Frequency Code
Code
N
R
L
Notes:
1]
2]
3]
4]
Frequency Code
Temperature
Range
C
Code
W
H
C
1
Code
X5
01
02
X2
05
Stability
±0.05ppm 3
4
±0.10ppm
±0.20ppm
±0.28ppm
±0.50ppm
Temp. Range
0°C to +50°C
-10°C to +60°C
-20°C to +70°C
Code
D
I
Frequency
Tuning
T
Temp. Range
-30°C to +85°C
-40°C to +85°C
Packaging
T
Code
T
Packing
1k pcs./reel
Frequency Deviation
Code
T
TCXO [No Voltage Control]
A
±5ppm - ±15ppm [VCTCXO ]
Refer to document 016-1454-0, Frequency Code Tables. 3-digits for frequencies
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