Product Data Sheet
VC-490/495
Voltage Controlled Crystal Oscillator
Features
• Small SMD HFF VCXO
• 50.0MHz to 170MHz
• 3.3V supply voltage
• -20 to +70°C / -40 to 85°C
• LVPECL / HCMOS / LVDS output
• Complementary outputs available
Applications:
• Gigabit Ethernet
• 10G and 40G Systems
• Basestations
• SDH/SONET/ATM
• Point to Point / Multipoint
• WDM Systems
• Test & Measurement Equipment
Description:
Available at frequencies up to 170MHz, the VC-
490/495 VCXO’s combine VI’s unique precision HFF-
crystal-technology with a low noise discrete circuit pro-
viding exceptional low jitter performance compared to
standard ASIC-solutions.
The unit is packaged as an FR-4 based SMD device
measuring 13.8 x 9.1 x 5.5mm with a supply voltage of
3.3Vdc. Temperature ranges are -20° to +70°C and -40°
to +85°C with tight temperature stability. The oscillators
also have a pulling range of more than 100 ppm with
linearity of < 10% for enhanced PLL performance.
Output options available include LVHCMOS, comple-
mentary LVPECL and complementary LVDS.
The VC-490 ‘s small size and high performance
make it ideally suited for communication applications
including ATM/SONET/SDH and Gigabit Ethernet appli-
cations.
VC-490/495 Voltage Controlled Crystal Oscillator
Performance Characteristics
Electrical Performance
Parameter
Frequency:
Supply Voltage:
Output
Option
A
Option
F:
Option
P:
Output
Option
A LVHCMOS:
Option
F compl. LVPECL:
Option
P compl. LVDS:
Output load
Option
A:
Option
F:
Option
P:
Rise/Fall Time tr/tf:
Option
A:
Option
F, P:
Symmetry (Duty/Cycle):
Temp. stab.
D - 205
-20 to +70°C:
F - 305
-40 to +85°C:
Accuracy @ +25C after reflow:
Aging first year:
Aging per year thereafter:
Freq. vs. supply for 5% changes.:
Freq. vs. load for 10% change:
Deviation:
Control voltage:
Transfer Function:
Linearity:
Storage Temperature:
Package
490
(Option
F,P)
6 pads
Package
495
(Option
A)
4 pads
Lin
TS
-45
t
R
/ t
F
t
R
/ t
F
SYM
F
TEMP
F
TEMP
F
CAL
F
FIRST
F
AGING
F
SUP
F
LOAD
F
PULL
V
C
40
-20.0
-30.0
-15.0
-3.0
-2.0
-3.0
-1.0
±100
0.3
positive
10
+95
13.8x9.1x5.5
13.8x9.1x5.5
%
°C
mm
mm
3.0
I
CC
I
CC
I
CC
Symbol
FN
V
CC
Minimum
50.0
3.135
3.3
Typical
Maximum
170.0
3.465
Units
MHz
V
LVHCMOS
complementary LVPECL
complementary LVDS
20.0
50.0
15.0
1 kOhm // 15pF
50 Ohm
100 Ohm differential
3.0
1.0
60
+20.0
+30.0
+15.0
+3.0
+2.0
+3.0
+1.0
nsec.
nsec.
%
ppm
ppm
ppm
ppm
ppm/a
ppm
ppm
ppm
V
40.0
70.0
40.0
mA
mA
mA
Vectron International • 166 Glover Avenue, Norwalk, CT 06856 • Tel: 1-88-VECTRON-1 • www.vectron.com
2
VC-490/495 Voltage Controlled Crystal Oscillator
490 Package Outline Drawing/Pad Layout
Option A in
this package
upon request!
495 Package Outline Drawing/Pad Layout
Pin Out
Pin
1
2
3
4
5
6
Function
Control Voltage
Output enable/disable
Ground
Case
RF-Output
Complementary RF-output
Supply Voltage
Pin Out
Pin
1
2
3
4
Function
Control Voltage
Ground
Case
RF-Output
Supply Voltage
Standard Frequencies
61.44 MHz
122.88 MHz
68.746378 MHz
125.0 MHz
76.8 MHz
131.072 MHz
77.76 MHz
155.52 MHz
78.616 MHz
166.6286 MHz
90.843428 MHz
167.331645 MHz
Recommended Soldering Profile
Vectron International • 166 Glover Avenue, Norwalk, CT 06856 • Tel: 1-88-VECTRON-1 • www.vectron.com
3
VC-490/495 Voltage Controlled Crystal Oscillator
Tape and Reel
Ordering Information
VC
Product Family
VC=VCXO
490
D
F
D
205
A
155.52 MHz
Output Frequency
50.0 to 170.0 MHz
consult factory for
non-standard frequencies
Package
490 = 13.8 x 9.1 x 5.5 mm 6 pads
495 = 13.8 x 9.1 x 5.5 mm 4 pads
Supply Voltage
D = 3.3 V ±5%
Temperature Stability
D-205
= <±20 ppm /-20±70°C
F-305
= <±30 ppm /-40±85°C
Output Type
F = compl. LVPECL (package 490)
P = compl. LVDS (package 490)
A = compl. LVCMOS (package 495)
For additional information please contact:
USA:
Vectron International • 166 Glover Avenue, Norwalk, CT 06856 . . . .
Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
EUROPE:
In Denmark, Finland, Ireland, Israel, Norway, Spain, UK . . . . . . .
Tel: 44 23 8076 5205 • Fax: 44 23 8076 6822
In Austria, Belgium, France, Germany, Italy, Luxembourg
Netherlands, Sweden, Switzerland, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tel: 49 (0) 72 63 6480 • Fax: 49 (0) 72 63 6196
ASIA:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tel: 203-853-4433 • Fax: 203-849-1423
www.vectron.com
Vectron International reserves the right to make changes to the product(s) and/or information contained herein without notice.
No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
©2001, Vectron International.
Rev.28Feb02
京公网安备 11010802033920号
EEWORLD
