Low G-Sensitivity
Voltage Controlled SAW Oscillator
VS-508
VS-508
Description
The VS-508 VCSO (Voltage Controlled Saw Oscillator) from Vectron is a high frequency, ultra low phase noise and low g-sensitivity
oscillator designed to support harsh environmental applications. The VS-508 provides 12fs rms jitter in a 12kHz to 20MHz
integration bandwidth and is available from 0.8 to 2.9GHz.
Features
•
•
•
•
•
•
•
•
Frequency Range 0.8 to 2.9 GHz
Ultra low jitter performance
Typical Jitter: 12fsec rms, 12kHz to 20MHz
G-Sensitivity <0.6ppb/g
3.3 + 5V supply voltage
Output: Sinewave, balanced Sinewave, LVPECL
9x14 mm SMD package
See table on Page 5 for standard frequencies
•
•
•
Applications
Harsh Environment
Military
Test & Measurement
Performance Specifications
Pulling Characteristics
Parameter
Absolute Pull Range (APR)
Min
±20
Typ
Max
Units
ppm
Notes
Includes df vs:
•Operating temperature range +10 .. 85°C
•Aging 10 years
•Supply Voltage Change 5%
•Load change 10%
Positive
with V
S
= 5V
with V
S
= 3.3V
Tuning Slope
Control Voltage Range
Frequency control input
impedance
Modulation bandwidth
Supply voltage (standard)
Current consumption
Supply voltage (standard)
Current consumption
3.135
3.3
0.5
0
20
100
2.5
1.65
4.5
3.3
V DC
VDC
kΩ
kHz
@ -3dB
Supply Voltage (Vs)
4.75
5.00
5.25
65
3.465
100
V DC
mA
V DC
mA
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Performance Specifications (Continued)
RF Output
Parameter
Signal
Load
Duty Cycle
Phase Noise: 100Hz offset
Phase Noise: 1kHz offset
Phase Noise: 10kHz offset
Phase Noise: 100kHz offset
Phase Noise: 1MHz offset
Phase Noise: 10MHz offset
Jitter: 12kHz to 20MHz offset
Signal
Load
Output Power
Phase Noise: 100Hz offset
Phase Noise: 1kHz offset
Phase Noise: 10kHz offset
Phase Noise: 100kHz offset
Phase Noise: 1MHz offset
Phase Noise: 10MHz offset
Jitter: 12kHz to 20MHz offset
45
0
45
45
-78
-102
-129
-148
-150
-150
29
Balanced Sinewave
50
3
-65
-95
-120
-141
-154
-165
10
55
6
Ω
dBm
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
fs rms
@ 2GHz
Sinewave
3.3V
50
Min
Typ
LVPECL
Max
55
55
Units
Ω
%
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
fs rms
Notes
@ 1GHz
LVPECL
3.3V
Additional Parameters
Parameter
Weight
Subharmonics
G-Sensitivity
Processing and Packing
0.6
Handling and Processing Note
Min
2.0g
Max
-30
-20
Units
dBc
dBc
ppb/g
< 2 GHz
> 2 GHz
Notes
Absolute Maximum Ratings
Parameter
Supply Voltage (V
S
)
Operable Temperature Range
Storage Temperature Range
-40
-40
Min
Max
6.0
+85
+95
Units
V
0C
0C
Notes
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Typical Performance
Performance Specifications (Continued)
Phase Noise
VS-508 @ 1GHz LVPECL
Phase Noise
VS-508 @ 2GHz Sinewave
G-Sensitivity
VS-508 @ 1GHz LVPECL
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Outline Drawing / Enclosure
Package Codes
Code
G347
Height “H”
4.9
Pin Length “L”
N/A
Dimensions in mm
Pin Assignment Sinewave
1
2
3
4
5
6
7
8
9
10
GND
Control Voltage (V
C
)
N.C. (Not Connected)
GND
GND
GND
RF Out
N.C. (Not Connected)
Supply Voltage Input (V
S
)
GND
Pin Assignment LVPECL
1
2
3
4
5
6
7
8
9
10
GND
Control Voltage (V
C
)
N.C. (Not Connected)
GND
GND
GND
RF Out
RF-Out_complementary
Supply Voltage Input (V
S
)
GND
Pin Assignment Balanced Sinewave
1
2
3
4
5
6
7
8
9
10
GND
Control Voltage (V
C
)
N.C. (Not Connected)
GND
GND
GND
RF Out
RF-Out_Compl. 180° phase shifted
Supply Voltage Input (V
S
)
GND
Marking
VS-508-xxxx
Frequency
•AYYWW
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Standard Shipping Method
K
1.75±0.1
Position in tape
Pin1
A
4.0
XXXXX
XXXXX
Unwinding direction
B
B
cross-section
A-A
R
0.7
5
A
A
±0.05
P
0.2
0
if W < 32mm only upper hole line existent
cross-section
B-B
Dimension in mm:
A, B and K are dependent uppon component dimensions
production tolerance complying DIN IEC 286-3
All dimensions in millimeters unless otherwise stated
Enclosure Type
G347
Tape Width W (mm)
24
Quantity per meter
Quantity per reel
850
W
B
Dimension P (mm)
12
Recommended Reflow Profile
TP: max 250°C (@ solder joint,
customer board level)
T
p
: max: 10…30 sec
Additional Information:
This SMD oscillator has been
designed for pick and place reflow
soldering
SMD oscillators must be on the top
side of the PCB during the reflow
process.
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