978W
Typical Applications
PCS Base Stations
Land Mobile Radio
Cellular Telephony
Radio in the Local Loop
Test Equipment
Avionics
TCXO
Features
High Frequency
3.3 Volt Supply
Low Profile Package
Standard 4-Pin DIP Package
Mechanical Control, EFC Optional
Surface Mount Options Available
Frequency Range
Parameters
Operating
Temperature Range
Frequency Stability
(ppm)
> 30 MHz – 200 MHz
Model Numbers
Clipped Sine Wave
(1 Vpp min. into 1kΩ)
Square Wave
(CMOS)
0....50°C
0.....70°C
-20....+70°C
-30....+70°C
-40....+85°C
±
1.0 ppm
±
2.0 ppm
±
2.5 ppm
±
5.0 ppm
±
2.0 ppm
±
2.5 ppm
±
1.0 ppm
±
2.0 ppm
±
2.5 ppm
±
1.0 ppm
±
2.0 ppm
±
2.5 ppm
978WCB
978WAD
978WDE
978WDF
978WBD
978WBE
978WCB
978WCD
978WCE
978WEB
978WED
978WEE
978WHCB
978WHAD
978WHDE
978WHDF
978WHBD
978WHBE
978WHCB
978WHCD
978WHCE
978WHEB
978WHED
978WHEE
Typical Phase Noise @ 40 MHz
Note: Model 978W custom versions available with output waveforms of ACMOS, SINE, ECL & PECL
Additional Parameters
Supply Voltage:
Current
Clipped Sinewave:
CMOS:
Aging:
Mechanical Frequency
Control:
Electrical Frequency
Control
Voltage Range:
Deviation:
Slope:
Input Impedance:
+3.3 Vdc
±
5%
2 mA to 6 mA
5 mA to 40 mA
±
1 ppm/year
±
3.5 ppm min.
1Hz Offset
10Hz Offset
100Hz Offset
1kHz Offset
10kHz Offset
<- 55 dBc / Hz
<-90 dBc / Hz
<-120 dBc / Hz
<-140dBc / Hz
<-150dBc / Hz
0 to 3 Vdc
±
8 ppm min.
(others available)
Positive
> 10 kohms
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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978W
Enclosures
TCXO
1
7
8
14
Pin Connections
Voltage Control or N/C
GND
RF Output
Vcc
Dimensions: Inches (mm)
1
7
8
14
Pin Connections
Voltage Control or N/C
GND
RF Output
Vcc
Dimensions: Inches (mm)
1
7
8
14
Pin Connections
EFC when specified
GND
RF Output
Supply Voltage
Dimensions: Inches (mm)
Model
EFC
Waveshape
Freq. Stab.
Temp. Range
Package
Code
Frequency
978W
Blank = No EFC
V= EVC Option
* Typical P/N = 978VWHABT40
WHAB
T = Through-hole
S = SMT
G = Gullwing
40M00000
Note: Package is non-hermetic
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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