
978W
TCXO
Corning Frequency Control Worldwide Data Book 2001
v1.1.2001-10-09
Corning Frequency Control Inc. 100 Watts Street Mt. Holly Springs, PA 17065 Tel 1-717-486-3411 Fax 1-717-486-5920 www.corningfrequency.com
Tele Quarz GmbH & Co. KG Landstrasse D-74924 Neckarbischofsheim, Germany Tel +49-7268-801-0 Fax +49-07268-801-281 www.telequarz.de
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Typical Applications
Features
PCS Base Stations
High Frequency
Land Mobile Radio
3.3 Volt Supply
Cellular Telephony
Low Profile Package
Radio in the Local Loop
Standard 4-Pin DIP Package
Test Equipment
Mechanical Control, EFC Optional
Avionics
Surface Mount Options Available
Frequency Range
>30MHz –200MHz
Parameters
Model Numbers
Operating
Temperature Range
Frequency Stability
(ppm)
Clipped Sine Wave
(1 Vppmin.into1k
)
Square Wave
(CMOS)
0....50°C
± 1.0 ppm
± 2.0 ppm
978WCB
978WAD
978WHCB
978WHAD
0.....70°C
± 2.5 ppm
± 5.0 ppm
978WDE
978WDF
978WHDE
978WHDF
-20....+70°C
± 2.0 ppm
± 2.5 ppm
978WBD
978WBE
978WHBD
978WHBE
-30....+70°C
± 1.0 ppm
± 2.0 ppm
± 2.5 ppm
978WCB
978WCD
978WCE
978WHCB
978WHCD
978WHCE
-40....+85°C
± 1.0 ppm
± 2.0 ppm
± 2.5 ppm
978WEB
978WED
978WEE
978WHEB
978WHED
978WHEE
Note: Model 978W custom versions available with output waveforms of ACMOS, SINE, ECL & PECL
Additional Parameters
Typical Phase Noise @ 40 MHz
Supply Voltage:
+3.3 Vdc
± 5%
1Hz Offset
<- 55 dBc / Hz
Current
10Hz Offset
<-90 dBc / Hz
Clipped Sinewave:
2 mA to 6 mA
100Hz Offset
<-120 dBc / Hz
CMOS:
5 mA to 40 mA
1kHz Offset
<-140dBc / Hz
Aging:
± 1 ppm/year
10kHz Offset
<-150dBc / Hz
Mechanical Frequency
Control:
± 3.5 ppm min.
Electrical Frequency
Control
Voltage Range:
0 to 3 Vdc
Deviation:
± 8 ppm min.
(others available)
Slope:
Positive
Input Impedance:
> 10 kohms