Surface Mount VCXO
ECM VF194 / 294
§
§
§
§
§
Very Low Phase Jitter
Industrial Temperature Range
Miniature Ceramic Package
SMD Tri-state Oscillator
3.3V Supply
Parameter
Frequency Range
Stability
Supply Voltage
Supply Current
Load
Duty Cycle
Rise & Fall Times
Logic “1” Level
Logic “0” Level
Start Up Time
Phase Jitter
Modulation BW
Input Impedance
Control Voltage
Pulling Range
Linearity
Setability (Vc for
center frequency)
Tristate Fuction
Enable Disable
Operating Temp
VF194 – VF294
Notes
1.54MHz to 160.0MHz
+/-25ppm
Vs. Temp
5V +/-5%
Standard
3.3V +/-5%
Option
30mA
No Load
10TTL gates or 50pF
40 / 60 or 45/55
Specify
6nS max
0.9Vcc min
Max Load
0.1Vcc max
Max Load
10mS max
2mS Typ
1pS max
<52MHz
20pS max
>52MHz
10kHz @ -3dB min
50K ohm min
Fm<10kHz
0V to 5.0V
Vcc 5.0V
0V to 3.3V
Vcc 3.3V
+/- 50ppm
Or Specify
+/-20%
2.50V typ
Vcc 5.0V
1.65V typ
Vcc 3.3V
Input HIGH (>2.5V) or floating: ACTIVE
Input LOW (<0.5V): INFINITE IMPEDANCE
100ns max
0
0
0 C to +70 C
Standard
0
0
-45 C to +85 C Available
Option
1 50 155.52M
Environmental & Mechanical
Mechanical
Mil STD 202 Method 213
Shock
Cond E
Thermal
Mil STD 883 Method 1011
Shock
Cond A
Vibration
MIL-STD-883 Method 2007
Cond A
0
Soldering
230 C for 90s max
-8
Hermetic
Leak rate less than 5x10
Seal
Atm.cc/s of helium
Pin (VF194)
Connection
Pin (VF194)
Connection
Pin (VF294)
Connection
Pin (VF294)
Connection
A
7.7
B
5.2
C
2.3
1
Vc
6
O/P
1
Vc
6
Vcc
D
1.14
2
N/C
5
Tri
2
Tri
5
N/C
E
5.08
3
GND
4
Vcc
3
GND
4
O/P
F
1.27
G
3.93
Part Numbering
VF194 /294 S H L
Type
Stability S = 20ppm Blank = Std
Duty Cycle H = 45/55 Blank = 46/60
Supply Voltage L = 3.3V Blank = 5.0
0
0
Temperature Range 1 = -40 C to +85 C
Blank = Standard
Pulling Range Blank = Std or specify
Frequency
Dimensions in mm
ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK
Tel: +44(0)1903 892810: Fax: +44(0)1903 892738. Email: ecm@ecmelectronics.co.uk
Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to
discontinue any product or make design changes we believe necessary.
Issue 1
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