V C X O
VF194/294 Series
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 Fax: 508-435-5289 www.valpeyfisher.com
90
Creating a Part Number
VF194/294
FREQUENCY STABILITY
Code
Specification
S
20 ppm
(std.)
ABSOLUTE PULL RANGE (ppm)
Code
Specification
XXX
Specify Deviation MIN.
DUTY CYCLE
Code
Specification
H
5%
10% (std.)
INPUT VOLTAGE
Code
Specification
L 3.3
Volt
5%
5.0
Volt
5% (std.)
OPERATIONAL TEMP. RANGE
Code
Specification
0
C to +70
C (std.)
1 -40
C to +85
C
(MAX.
100 PPM)
FREQ.
Example: VF194-1-100-77.76MHz: Frequency Stability
25ppm, Duty Cycle
10%, Input Voltage 5.0 Volt
5%, Operating Temperature -40
C to +85
C,
Absolute Pull Range (ppm)
100min. Output Tristate Control Pin #5,
Frequency 77.76MHz.
VF194/VF294 Series
HCMOS/TTL Hybrid VCXO
Surface Mount Ceramic Package
Tristate Output Standard
F E AT U R E S
Very Low Phase Jitter
Industrial Temperature Range
High Reliability
Wide Frequency Range
Miniature Package
3.3V supply available
0.303"
(7,7mm)
VF294
155.520MHz
BO1H
1
2
3
6
5
4
0.206"
(5,2mm)
0.200"
(5,08mm)
0.090"
(2,29mm)
0.045"
(1,143mm)
0.100"
(2,54mm)
0.050"
(1,27mm)
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Vcc
0.5
7.0
V
Down Voltage
Storage Temp.
Ts
55
+125
C
Control Voltage
Vc
1
9
V
Frequency
Range
F
1.5
160
MHz
Frequency
F/F
vs. Temp., Vcc
25
ppm
Stability
Input Voltage
Vcc
4.75
5.00
5.25
V
Standard
3.15
3.30
3.45
LV Opt.
Input Current
Icc
No load
30
mA
1
Load
Duty Cycle
@1.4V
40
50
60
%
2
Rise/Fall Time
Tr/Tf
20% to 80%
6
ns
5
0.4V to 2.4V
4
Logic "1" Level
Voh
Max Load
0.9Vcc
V
Logic "0" Level
Vol
Max Load
0.1Vcc
V
Startup Time
Ts
2
10
ms
Phase Jitter
1
, F<52 MHz
1
ps
fj>1KHz
1
, F>52 MHz
20
Modulation BW
fm
@Vc = 2.5V
10
KHz
@3db
Input Impedance
fm<10KHz
50
KOhm
Control Voltage
Vc
Vcc = 5.0V
0
5.0V
V
4
Vcc = 3.3V
0
3.3V
Absolute
APR
Overall
50
ppm
3
Pull Range
Deviation Slope
Monotonic,
50
ppm/V
positive
Linearity 20
%
Setability (Vc
Vc0
@25C,
2.00
2.50
3.00
V
Vcc = 5.0V
for center freq)
Fnominal
1.25
1.65
2.05
Vcc = 3.3V
Tristate
Function
Enable/ 100
ns
Disable Time
Operating
Temperature Range
0C to +70C (40C to +85C available)
Mechanical Shock
Per MILSTD202, Method 213, Cond. E
Thermal Shock
Per MILSTD883, Method 1011, Cond. A
Vibration
Per MILSTD883, Method 2007, Cond. A
Soldering Conditions
230C, for 90s, Max.
Hermetic Seal
Leak rate less than 5 x 10
8
atm.cc/s of helium
Pin Out
Pin #1Voltage Control
Pin #2N/C (194) Tristate (294)
Pin #3Ground, Case
Pin #4Output
Pin #5Tristate (194), N/C (294) Pin #6Vcc
10 TTL gates or 50pF
Notes:
1. Current is frequency and load dependent.
2. Tighter duty cycle available.
3. 100ppm available at some frequencies. 32ppm for some
frequencies at 3.3V is the only option.
4. 05V control voltage available for Vcc 3.3V. Nominal control
voltage is 2.5V and setability is 0.5V in this case.
5. For higher frequency Tr/Tf is shorter.
Absolute
Max. Ratings
Electrical
Environmental and Mechanical
Electrical
Connections
All dimensions are typical unless otherwise specified.
Input HIGH (>2.5V) or floating:
ACTIVE
Input LOW (<0.5V):
INFINITE IMPEDANCE
All specifications are subject to change without notice.
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