V C X O
VF594
VF594
HCMOS/TTL Compatible
Surface Mount Ceramic Package
F E AT U R E S
Wide Frequency Range
•
Very Low Phase Jitter
at All Frequencies
•
Wide Pullability (±1000ppm
available at some frequencies)
•
Parameter
Absolute
Max. Ratings
Symb
Vcc
Ts
Vc
F
∆F/F
Vcc
Icc
Condition
Min
–0.5
–55
–1
1.54
Typ
Max
7.0
+85
9
160
Unit
V
°C
V
MHz
ppm
Note
Input Break
Down Voltage
Storage Temp.
Control Voltage
Frequency
Range
Frequency
Stability
Input Voltage
Input Current
EMI Shielded
•
Standard Footprint
•
Wide Operating Temperature
•
Vs. Temp., Vcc
4.75
3.15
No Load
±25
5.00
3.30
12
5.25
3.45
V
mA
Std.
LV Opt.
@20MHz
#4
0.350"
(8,89mm)
#3
0.385"
(9,78mm)
Load
Duty Cycle
Rise/Fall Time
Electrical
VF594
44.776MHz
BO1H
#1
#2
10 TTL gates or 50pF MAX, AC coupled 50 Ohm
termination recommended @ Freq. >54 MHz
@1.4V
Tr/Tf
Voh
Vol
Ts
1σ
@Vc = 2.5V
fm<10KHz
Vc
Vcc = 5.0V
Vcc = 3.3V
Monotonic,
Positive
APR
±50
±20
Vc0
@25°C, Fnom.
2.00
1.20
2.50
1.65
3.00
2.10
10
50
0.0
0.0
2.50
1.65
50
75
5.00
3.30
20% to 80%
Max Load
Max Load
2
0.9Vcc
0.1Vcc
10
1
ms
ps
KHz
KOhm
V
3
fj>1KHz
@–3db
40
50
60
6
%
ns
1
2
Logic “1” Level
Logic “0” Level
Start–up Time
0.550" TYP
(13,97mm)
0.130" TYP
(3,302mm)
0.185" MAX
(4,70mm)
0.200"
(5,08mm)
0.018" TYP
(0,457mm)
Phase Jitter
Modulation BW
Input Impedance
Control Voltage
Deviation Slope
#1
#4
#2
0.300" (7,62mm)
Mounting Center
#3
ppm/V Vcc = 5.0V
Vcc = 3.3V
ppm
%
V
4
Vcc = 5.0V
Vcc = 3.3V
Absolute
Pull Range
Linearity
All dimensions are typical unless otherwise specified.
Setability (Vc
for center freq)
Operating
Temperature Range
Creating a Part Number
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
260°C, for 10s, Max; 230°C, for 90s, Max.
Leak rate less than 5 x 10
–8
atm.cc/s of helium
Pin #1–Voltage Control
Pin #3–Output
Pin #2–Ground, Case
Pin #4–Vcc
VF594
FREQUENCY STABILITY
Code
S
FREQ.
ABSOLUTE PULL RANGE (ppm)
Environmental
and Mechanical
Electrical
Connections
Mechanical Shock
Thermal Shock
Vibration
Soldering Conditions
Hermetic Seal
Pin Out
Specification
±20
±25
ppm
ppm (std.)
Code
XXXX
Specification
±50
ppm (std.)
up to
±1000
ppm
(customer to specify)
OPERATIONAL TEMP. RANGE
DUTY CYCLE
Code
H
Code
1
Specification
0°C to +70°C (std.)
-40°C to +85°C
Specification
±5%
±10%
(std.)
INPUT VOLTAGE
Code
L
Specification
3.3 Volt
±5%
5.0 Volt
±5%
(std.)
Example: VF594-77.76MHz: Frequency Stability
±25ppm,
Duty Cycle
±10%,
Input Voltage 5.0 Volt
±5%,
Operating Temperature 0°C to +70°C,
APR
±50ppm,
Frequency 77.76MHz.
Notes:
1. Tighter duty cycle available.
2. Frequency dependent. Shorter at higher frequencies
3. 0V to 5V control voltage available for Vcc 3.3V. Nominal Control Voltage is 2.5V and Setability is ±0.5V
in this case.
4. 10% and 5% available.
All specifications are subject to change without notice.
75 South Street, Hopkinton, MA 01748
800-982-5737
508-435-6831
Fax: 508-435-5289 www.valpeyfisher.com
85
PCB设计
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