Voltage Controlled Saw Oscillators (VCSO’s)
VS-500 Series
Description:
The VS-500 is a SAW based voltage controlled
oscillator that operates at the fundamental frequen-
cy of the internal SAW filter. This product is ideally
suited for SONET/SDH/10G Ethernet and other opti-
cal applications.
Features
•
•
•
•
•
•
•
•
•
Output Frequency 155 MHz to 800 MHz
3.3V or 5.0V operation
Low jitter, <1 ps rms across 50 kHz to 80 MHz
J-Lead package
Ideal for clock smoothing, frequency translation,
clock and data retiming applications
10K ECL, PECL logic levels with fast transition
times
Complementary outputs
Low profile, surface mount package
Output disable feature
Performance Characteristics
Table 2. Electrical Performance @ 25°C
Parameter
Center Frequency (See Ordering Information)
Operating Temperature
Supply Current (No Load)
Supply Voltage
Absolute Pull Range
(-40 to 85 Deg C, VC = 0.3 to 3.0 V)
Positive Gain Transfer @ 155.52 (3.3V)
Positive Gain Transfer @ 622.08 (3.3V)
Linearity1
Frequency Stability (-40 to 85 Deg C)
Mid Level Voltage
Output Voltage Swing (peak to peak)
Output Rise Time3
Output Fall Time3
Jitter @ 155.52 MHz (12kHz to 20MHz)
Jitter @ 622.08 MHz (50 kHz to 80 MHz)
Spurious Suppression
Data Symmetry
Control Voltage Input Impedance
Control Voltage Modulation Bandwidth
Output Current
1. Linearity is a best-fit straight line
2. Output Levels are standard 100K PECL compatible.
Symbol
F
N
T
OP
I
CC
V
CC
APR
K
V
K
V
Lin
F
STAB
Minimum
155.52
-40
2.97
±50
Typical
25
55
3.3
-
650
430
±3
±150
VCC-1.3
650
250
250
0.694
0.350
60
100
500
-
Maximum
800
+85
70
3.63
-
Units
MHz
°C
mA
V
ppm
ppm/V
ppm/V
%
ppm
V
mV
ps
ps
ps-rms
dBc
%
kW
kHz
mA
VCC-1.5
500
t
R
t
F
VCC-1.1
800
400
400
SYM
Zc
BW
I
OUT
50
45
-
-
55
-
20
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
32
Voltage Controlled Saw Oscillators (VCSO’s)
VS-500
Outline Drawing
6
5
4
VS-500-LFF-GNN
FREQUENCY
VI YWW
1
2
3
Pad Layout
Dimensions are in
inches and (millimeters)
0.118
(3.00)
0.200
(5.08)
0.050
(1.27)
0.100
(2.54)
0.346
(8.80)
VCSO
Pin out information
Pin
1
2
3
4
5
6
Standard Frequencies (MHz)
Function
155.520
166.6286
622.080
627.3296
669.1280
767.250
156.250
177.7371
624.7048
644.5313
669.3265
777.600
161.1328
311.040
625.000
666.5143
765.5906
Symbol
V
C
O
D
GND
Output
COutput
V
CC
VCSO Control Voltage
Output Disable
Case and electrical ground
VCSO Output
VCSO Complementary Output
Power Supply Voltage
Other Frequencies available - contact factory.
Ordering Information
VS
Product Family
VS = VCSO
500
L
F
F
G
N
Other
N
Other
622.080
Frequency
MHz
Package
500
= 6 pin J lead SMD
Absolute Pull Range
G =
+50 ppm
H =
+100 ppm
Temperature Range
F
= -40
o
C to +85
o
C
Output
F =
Complementary PECL
Supply Voltage
L =
3.3V +10%
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
33
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