VF946 Series
V C X O
VF946 Series
HCMOS/TTL Compatible Tri–State
Hybrid VCXO 6 Pin Ceramic Package
F E AT U R E S
Parameter
Absolute
Max. Ratings
*Not recommended for new designs
Min
–0.5
–55
–1
Typ
Max
7.0
+125
9
Unit
V
°C
V
Note
Symb
Vcc
Ts
Vc
F
Condition
Frequency
Range
Frequency
Stability
Input Voltage
Input Current
Load
∆F/F
Vcc
Icc
TE
1.5
52
vs. Temp., Vcc
±25
4.75
3.15
5.00
3.30
5.25
3.45
30
No load
10 TTL gates or 50pF
40
50
@1.4V
60
6
4
0.9Vcc
0.1Vcc
2
10
1
10
50
0.00
0.00
±50
2.50
1.65
5.00
3.30
10% to 90%
0.4V to 2.4V
Max. Load
Max. Load
1σ
@Vc = 2.5V
fm<10KHz
Vcc = 5.0V
Vcc = 3.3V
Overall, includes
stability
over temp.
Monotonic, posit.
50
±20
@25°C,
Fnominal
2.00
1.25
2.50
1.65
3.00
2.05
Input HIGH (>2.5V) or floating: ACTIVE
Input LOW (<0.5V): INFINITE IMPEDANCE
100
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.
Leak rate less than 5 x 10
–8
atm.cc/s of helium
Pin #1– Voltage Control
Pin #3– Case, Ground
Pin #5– N/C
Tristate Output Standard
•
Small 6 Pin DIP
•
Compatible with the popular
S–type VCXO
•
Industrial Temperature Range Available
•
Very Low Phase Jitter
•
High Reliability
•
Frequencies to 52 MHz
•
0.335"
(8,51)
#6
#5
#4
Input Break
Down Voltage
Storage Temp.
Control Voltage
MHz
ppm
V
Std.
LV Opt.
1
mA
LE
Rise/Fall Time
Tr/Tf
Voh
Vol
Ts
Logic “1” Level
Logic “0” Level
Start–up Time
Phase Jitter
Electrical
Duty Cycle
%
ns
V
V
2
0.310"
(7,87mm)
VF946
19.44MHZ
BO1H
#1
#2
#3
ms
ps
KHz
KOhm
V
ppm
3
fj>1KHz
@–3db
O
0.010"
±
0.002"
(0,254mm
±
0,05mm)
0.132"
±
0.010"
(3,35mm
±
0,254mm)
0.250" REF
(6,35mm)
Modulation BW
Input Impedance
Control Voltage
Vc
0.018"
±
0.002"
(0,457mm
±
0,05mm)
0.100"
(2,54mm)
BS
0.200"
(5,08mm)
#2
Absolute Pull
Range
(guaranteed
capture range)
Deviation Slope
Linearity
Setability (Vc
for center freq)
Vc0
ppm/V
%
V
4
#1
#3
0.300"
(7,62mm)
Std
LV opt.
#6
#5
#4
Tristate Function
Enable/Disable
Time
Operating
Temperature Range
Mechanical Shock
Thermal Shock
Vibration
Soldering Conditions
Hermetic Seal
O
All dimensions are typical unless otherwise specified.
Creating a Part Number
ns
FREQUENCY STABILITY
Code
S
ABSOLUTE PULL RANGE (ppm)
Specification
±20
±25
ppm
ppm (std.)
Code
XXXX
Specification
±50
ppm (std.)
up to
±100
ppm
(customer to specify)
DUTY CYCLE
Code
H
OPERATIONAL TEMP. RANGE
Specification
±5%
±10%
(std.)
Code
1
Specification
INPUT VOLTAGE
Code
L
Specification
3.3 Volt
±5%
5.0 Volt
±5%
(std.)
Electrical
Connections
0°C to +70°C (std.)
-40°C to +85°C
Environmental
and Mechanical
VF946
FREQ.
Pin Out
Pin #2– Tristate Control
Pin #4– Output
Pin #6– Vcc
Example: VF946HL-1-75-44.736MHz: Frequency Stability
±25ppm,
Duty Cycle
±5%,
Input Voltage 3.3 Volt
±5%,
Operating Temperature
-40°C to +85°C, APR
±75ppm,
Frequency 44.736MHz.
Notes:
1. Frequency dependent.
2. Tighter duty cycle available.
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. Frequency dependent, 30 ppm at F>40MHz.
5. Surface mount available, see VF946G, VF946L.
84
75 South Street, Hopkinton, MA 01748
800-982-5737
508-435-6831
Fax: 508-435-5289 www.valpeyfisher.com
Rev_B1208
