TX-191
Temperature Compensated Crystal Oscillator
TX-191
Description
Vectron International has introduced a series of surface mount, Temperature Compensated Crystal Oscillators (TCXO) available in
The TX-191 surface mount TCXO’s can be mounted using the standard convection re!ow process. The units can meet the ±±.ꢀ3
holdover requirement of GR-1244-CORE table ꢀ-1 from ± °C to +3± °C temperature range and operate from ꢀ.ꢀV or 5.±V supply.
Features
Applications
• Stratum ꢀ Compliant
• Tight Stability
• SONET/SDH
• Synthesizers
• Low Aging
• Frequency Range: 1± MHZ to 622 MHZ
• Previous Model: MC12±±, TC-21±
• Optimized for Semtech SONET / SDH
• Synchronization Sets
Performance Speci!cations
Parameter
Min
Typ
Max
Units
Condition
Frequency Stabilities1
vs. operating temperature range
(referenced to +25°C)
-±.8
-±.28
-±.8
+±.8
+±.28
+±.8
ppm
ppm
ppm
ppm
ppm
-4±… +85°C
-ꢀ±… +85°C
-2±… +3±°C
-2±… +3±°C
±… +5±°C
-±.28
-±.28
+±.28
+±.28
Initial Tolerance (w\$xed frequency)
vs. supply voltage change
vs. load change
-1.5
-±.1
-±.1
-2.5
-4.6
+1.5
+±.1
+±.1
+2.5
+4.6
ppm
ppm
ppm
ppm
ppm
at time of shipment, No EFC
Vs ± 5ꢁ
Load ± 1±ꢁ
vs. aging / 15 years
Overall Tolerance
*Stratum ꢀ per GR-1244-CORE:
<±4.6 ppm for all causes and 15
years aging, Holdover: <±±.ꢀ3
ppm over 24 hours
Supply Voltage (Vs)
Supply voltage (Standard)
Supply voltage (Option)
ꢀ.1ꢀ5
4.35
ꢀ.ꢀ
5.±
ꢀ.465
5.25
VDC
VDC
Vectron International • 263 Lowell Road, Hudson, NH ±ꢀ±51 • Tel: 1-88-VECTRON-1 • http://www.vectron.com