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Surface Mount VCXO
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
ECM VF194 / 294
Environmental & Mechanical
Mechanical
Shock
Mil STD 202 Method 213
Cond E
Thermal
Shock
Mil STD 883 Method 1011
Cond A
Vibration
MIL-STD-883 Method 2007
Cond A
Soldering
230
0C for 90s max
Hermetic
Seal
Leak rate less than 5x10
-8
Atm.cc/s of helium
Parameter
VF194 – VF294
Notes
Frequency Range
1.54MHz to 160.0MHz
Stability
+/-25ppm
Vs. Temp
Supply Voltage
5V +/-5%
3.3V +/-5%
Standard
Option
Supply Current
30mA
No Load
Load
10TTL gates or 50pF
Duty Cycle
40 / 60 or 45/55
Specify
Rise & Fall Times
6nS max
Logic “1” Level
0.9Vcc min
Max Load
Logic “0” Level
0.1Vcc max
Max Load
Start Up Time
10mS max
2mS Typ
Phase Jitter
1pS max
20pS max
<52MHz
>52MHz
Modulation BW
10kHz @ -3dB min
Input Impedance
50K ohm min
Fm<10kHz
Control Voltage
0V to 5.0V
0V to 3.3V
Vcc 5.0V
Vcc 3.3V
Pulling Range
+/- 50ppm
Or Specify
Linearity
+/-20%
Setability (Vc for
center frequency)
2.50V typ
1.65V typ
Vcc 5.0V
Vcc 3.3V
Tristate Fuction
Input HIGH (>2.5V) or floating: ACTIVE
Input LOW (<0.5V): INFINITE IMPEDANCE
Enable Disable
100ns max
Operating Temp
0
0C to +700C
-45
0C to +850C Available
Standard
Option
Part Numbering
VF194 /294 S H L
1 50 155.52M
Type
Stability S = 20ppm Blank = Std
Duty Cycle H = 45/55 Blank = 46/60
Supply Voltage L = 3.3V Blank = 5.0
Temperature Range 1 = -40
0C to +850C
Blank = Standard
Pulling Range Blank = Std or specify
Frequency
§ Very Low Phase Jitter
§ Industrial Temperature Range
§ Miniature Ceramic Package
§ SMD Tri-state Oscillator
§ 3.3V Supply
Pin (VF194)
1
2
3
Connection
Vc
N/C
GND
Pin (VF194)
6
5
4
Connection
O/P
Tri
Vcc
Pin (VF294)
1
2
3
Connection
Vc
Tri
GND
Pin (VF294)
6
5
4
Connection
Vcc
N/C
O/P
A
B
C
D
E
F
G
7.7
5.2
2.3
1.14
5.08
1.27
3.93
Dimensions in mm