Voltage Controlled Crystal Oscillators
VC-490/495
Description
precision 14 x 9 mm VCXO with high
frequency crystal, standard footprint.
Features
•
•
•
•
•
•
Small SMD HFF VCXO
50.0MHz to 170MHz
3.3V supply voltage
-20 to +70°C / -40 to 85°C
LVPECL / HCMOS output
Complementary outputs available
Performance Characteristics
Parameter
Frequency:
Supply Voltage:
Output option
A
LVHCMOS:
option
F
compl. LVPECL:
Output option
A
option
F:
Output load option
A:
option
F:
Rise/Fall Time tr/tf: option A:
option F:
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% change:
Freq. vs. load for ±10% change:
Deviation:
Control voltage:
Transfer Function:
Linearity:
Storage Temperature:
Package Size:
Lin
TS
-45
13.8 x 9.1 x 5.5 mm
t
R
/ t
F
t
R
/ t
F
SYM
F
TEMP
F
TEMP
FCAL
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
%
°C
3.0
Symbol
f
o
VCC
I
CC
I
CC
Minimum
50.0
3.135
Typical
3.3
20.0
50.0
Maximum
170.0
3.465
40.0
70.0
Units
MHz
V
mA
mA
LVHCMOS
complementary. LVPECL
1 kOhm // 15pF
50 Ohm
3.0
1.0
60
+20.0
+30.0
+15.0
+3.0
+2.0
+3.0
+1.0
ns
ns
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
V
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
18
Voltage Controlled Crystal Oscillators
VC-490/495
Option A outline drawing/pad layout
Option F outline drawing/pad layout
VCXO
Pin Out Information, VC-490
Pin
1
2
3
4
5
6
Function
Control Voltage
N.C. (Output Enable/Disable)
GND, Case
RF Output
Complementary RF-output
Supply Voltage
Pin Out Information, VC-495
Pin
1
2
3
4
Function
Control Voltage
GND, Case
RF Output
Supply voltage
Standard Frequencies
61.44MHz
77.76MHz
125.0MHz
155.52MHz
166.6286MHz
167.331645MHz
Ordering Information
VC
Product Family
VC
= VCXO
490
D
A
D
205
A
155.52
MHz
Output Frequency
50.0... 170.0MHz
Temperature & Stability
D-205
= ±20ppm over -20 to +70
o
C
F-305
= ±30ppm over 40 to +85
o
C
Output Type
A =
LVCMOS
F =
complementary. LVPECL
Package
490
=13.8x9.1x5.5mm with 6 pads
495
=13.8x9.1x5.5mm with 4 pads
Supply Voltage
D
= +3.3V +5%
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
19