VF1 9 4 / 2 9 4 Se rie s
V C X O
VF194/VF294 Series
HCMOS/TTL Hybrid VCXO
Surface Mount Ceramic Package
Tristate Output Standard
F E AT U R E S
Pa ra m e te r
Sy m b
Co n d itio n
Min
Ty p
Ma x
Un it
N o te
Input Break
Down Voltage
Vcc
–0.5
7.0
V
• Very Low Phase Jitter
• Industrial Temperature Range
• High Reliability
Storage Temp.
Control Voltage
Ts
–55
–1
+125
9
°C
V
Vc
• Wide Frequency Range
• Miniature Package
Frequency
Range
F
1.5
160
±25
MHz
ppm
Frequency
Stability
∆F/ F
vs. Temp., Vcc
• 3.3V supply available
Input Voltage
Vcc
Icc
4.75
3.15
5.00
3.30
5.25
3.45
V
Standard
LV Opt.
0.303"
(7,7mm)
Input Current
Load
No load
@1.4V
30
mA
1
VF294
0.206"
10 TTL gates or 50pF
155.520MHz
BO1H
(5,2mm)
Duty Cycle
Rise/ Fall Time
40
50
60
%
2
5
Tr/ Tf
20% to 80%
0.4V to 2.4V
6
4
ns
0.090"
(2,29mm)
Logic “1” Level
Logic “0” Level
Start–up Time
Phase Jitter
Voh
Vol
Ts
Max Load
Max Load
0.9Vcc
V
V
0.045"
0.1Vcc
10
(1,143mm)
2
ms
ps
1
6
2
5
3
4
1σ, F<52 MHz
1σ, F>52 MHz
1
20
fj>1KHz
@–3db
0.050"
(1,27mm)
Modulation BW
Input Impedance
Control Voltage
fm
@Vc = 2.5V
fm<10KHz
10
50
KHz
KOhm
V
0.100"
(2,54mm)
0.200"
(5,08mm)
Vc
Vcc = 5.0V
Vcc = 3.3V
0
0
5.0V
3.3V
4
3
All dimensions are typical unless otherwise specified.
Absolute
APR
Overall
±50
ppm
Pull Range
Creating a Part Number
Deviation Slope
Monotonic,
positive
50
ppm/ V
FREQ.
VF194/294
Linearity
±20
%
V
ABSOLUTE PULL RANGE (ppm)
FREQUENCY STABILITY
Code
XXX
Specification
Specify Deviation MIN.
Setability (Vc
for center freq)
Vc0
@25°C,
Fnominal
2.00
1.25
2.50
1.65
3.00
2.05
Vcc = 5.0V
Vcc = 3.3V
Code
S
Specification
±20
ppm
(MAX. ±100 PPM)
(std.)
Input HIGH (>2.5V) or floating:
Input LOW (<0.5V):
ACTIVE
INFINITE IMPEDANCE
Tristate
Function
OPERATIONAL TEMP. RANGE
Code
1
Specification
0°C to +70°C (std.)
-40°C to +85°C
DUTY CYCLE
Enable/
100
ns
Code
H
Specification
±5%
±10% (std.)
Disable Time
INPUT VOLTAGE
Code
L
Specification
3.3 Volt ±5%
5.0 Volt ±5% (std.)
Operating
Temperature Range
0°C to +70°C (–40°C to +85°C available)
Per MIL–STD–202, Method 213, Cond. E
Per MIL–STD–883, Method 1011, Cond. A
Per MIL–STD–883, Method 2007, Cond. A
230°C, for 90s, Max.
Mechanical Shock
Thermal Shock
Vibration
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.
Notes:
Soldering Conditions
Hermetic Seal
Pin Out
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. 0–5V 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.
Leak rate less than 5 x 10–8 atm.cc/ s of helium
Pin #1–Voltage Control
Pin #3–Ground, Case
Pin #2–N/ C (194) Tristate (294)
Pin #4–Output
Pin #5–Tristate (194), N/ C (294) Pin #6–Vcc
All specifications are subject to change without notice.
90
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 Fax: 508-435-5289 www.valpeyfisher.com
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