Single Frequency VCSO
VS-708
VS-708
Description
The VS-708 is a Voltage Controlled SAW Oscillator that operates at the fundamental or a fraction of the internal SAW filter frequency.
The SAW component is a high-Q Quartz device that enables the circuit to achieve low phase jitter performance over a wide operating
temperature range. The oscillator is housed in a hermetically sealed leadless surface mount package and offered on tape and reel. It has a
tri-state Output Enable function that provides one of three conditions: Outputs Enabled, Outputs Set, or Outputs Disabled.
Features
• Industry Standard Package: 5.0 x 7.0 x 1.8 mm³
• Output Frequencies: 600 MHz to 2.3 GHz
• 5
th
Generation ASIC Technology for Low Jitter
55 fs-rms (f
N
= 1.8 GHz, 12 kHz to 20 MHz)
• Absolute Pull Range:
±50
ppm
• Supply Voltage: 3.3 V
• LVDS Compatible Outputs (f
N
< 1.2 GHz)
• Differential or SE Sinewave Outputs (f
N
≥ 1.2 GHz)
• Tri-State Output Enable (OE / OS / OD)
• Compliant to EU RoHS 6 Directive
•
•
•
•
Applications
High Speed Data Converters (ADC / DAC)
Optical Transport Networks (40G / 100G / 200G / 400G)
Wireless Communication
Cable Modem Termination Systems (DOCSIS)
Block Diagram
Vcc
COutput
Output
SAW
Diffential
Sinewave
1
X
X = 1,2,4
Vc
OE
Gnd / Vee
Figure 1. Functional block diagram
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Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-888-328-7661 • http://www.vectron.com
1
Rev: 13May2016
Performance Specifications
Electrical Performance
Parameter
Nominal Frequency
Absolute Pull Range
Gain Transfer
Temperature Stability
Symbol
f
N
APR
K
V
f
STAB
Minimum
Frequency
600
±50
Typical
Maximum
2300
Units
MHz
ppm
Notes
1,3
1,3,4
4
1
+200
±50
ppm/V
ppm
Supply
Voltage (± 10%)
Current (Typical 50 Ω Load)
V
CC
I
EE
2.97
3.3
80
3.63
V
mA
3
2,3
Outputs (f
N
<1.2 GHz)
LVDS
Output Power (0.7 GHz to 0.9 GHz)
Output Power (0.9 GHz to 1.2 GHz)
-1.5
-2
dBm
dBm
2,3
2,3
Outputs (f
N
≥
1.2 GHz)
Single Ended Sinewave
Output Power (> 1.20 GHz to < 1.90 GHz)
Output Power (
≥
1.91 GHz to < 2.30 GHz)
Differential Sinewave
Differential Swing (f
N
= 1.2GHz)
Differential Swing (f
N
= 1.8GHz)
Differential Swing (f
N
= 2.1GHz)
Differential Swing (f
N
= 2.3GHz)
Subharmonics
Harmonics (f
N
> 2.1GHz)
-4
-6
1100
900
800
650
< -85
< -25
dBm
dBm
mV
mV
mV
mV
dBc
dBc
Outputs (600 MHz < f
N
< 2.3 GHz)
Spurious Suppression (Non-Harmonic)
Symmetry
Jitter
(10 kHz to 40 MHz)
(12 kHz to 20 MHz)
SYM
ΦJ
ΦJ
85
45
90
50
70
55
55
dBc
%
fs-rms
fs-rms
3
Control Voltage
Control Voltage
Modulation Bandwidth
Operating Temperature
Package Size
V
C
BW
T
OP
-40
5.0 x 7.0 x 1.8
0.3
50
+85
3.0
V
kHz
°C
mm
3
1,3
3
Notes:
1.
2.
3.
4.
5.
See Standard Frequencies and Ordering Information (Pg 6).
Output power levels degrade linearly over the whole frequency range. Given values are worst case values for each frequency range.
Parameters are tested at ambient temperature with test limits guard-banded for specified operating temperature.
Tested with Vc = 0.3V to 3.0V.
The Vc Model is described below (Fig 1).
450kΩ (Disabled)
138kΩ (Enabled)
3pF
V
CC
/2
V
C
Figure 1. Vc Model - Outputs Enabled / Disabled
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Figure 2. Waveform
Rev: 13May2016
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-888-328-7661 • http://www.vectron.com
2
Absolute Maximum Ratings
Absolute Maximum Ratings
Parameter
Power Supply
Voltage Control Range
Output Enable
Storage Temperature
Soldering Temperature/Duration
Symbol
V
CC
V
C
OE
T
STR
T
PEAK
/t
P
Ratings
0 to 6
0 to V
CC
0 to V
CC
-55 to 125
260 / 40
Unit
V
V
V
0C
0C/s
Stresses in excess of the absolute maximum ratings can permanently damage the device. Also, exposure to these absolute maximum
ratings for extended periods may adversely affect device reliability. Functional operation is not implied at these or any other conditions in
excess of those represented in the operational sections of this datasheet. Permanent damage is also possible if any device input (Vc or OE)
draws >100 mA.
Performance Characteristics
Figure 3. Performance Characteristics @ 1.2 GHz
Figure 4. Performance Characteristics @ 2.2 GHz
Output Load Configuration
Differential Sinewave Output
LVDS Output
LVPECL Output
Output Waveform Definition
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Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-888-328-7661 • http://www.vectron.com
3
Rev: 13May2016
Reliability
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow simulation. The
VS-708 family is capable of meeting the following qualification tests:
Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Solderability
Gross and Fine Leak
Resistance to Solvents
Moisture Sensitivity Level
Conditions
MIL-STD-883, Method 2002
MIL-STD-883, Method 2007
MIL-STD-883, Method 2003
MIL-STD-883, Method 1014
MIL-STD-883, Method 2016
IPC/JEDEC J-STD-020, MSL1
Handling Precautions
Although ESD protection circuitry has been designed into the VS-708 proper precautions should be taken when handling and mounting.
VI employs a Human Body Model (HBM), a Charged Device Model (CDM), and a Machine Model (MM) for ESD susceptibility testing and
design protection evaluation.
ESD Ratings
Model
Human Body Model
Charged Device Model
Machine Model
Minimum
2000 V
1000 V
200 V
Conditions
MIL-STD 883, Method 3015
JEDEC, JESD22-C101
JEDEC, JESD22-A115-A
Reflow Profile (IPC/JEDEC J-STD-020)
Parameter
PreHeat Time
Ramp Up
Time Above 217°C
Time To Peak Temperature
Time At 260°C
Ramp Down
Symbol
t
S
R
UP
t
L
t
AMB-P
t
P
R
DN
Value
60 s min., 180 s max.
3°C / s max.
60 s min., 150 s max.
480 s max.
20 s min., 40 s max.
6°C / s max.
The device has been qualified to meet the JEDEC standard for
Pb-free assembly. The temperatures and time intervals listed are
based on the Pb-free small body requirements. The temperatures
refer to the topside of the package, measured on the package
body surface. The VS-708 device is hermetically sealed so an
aqueous wash is not an issue.
Terminal Plating: Electroless Au > 1.50 µm over
Electroless Ni > 1.90 µm
Figure 5. Recommended Reflow Profile
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Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-888-328-7661 • http://www.vectron.com
4
Rev: 13May2016
Outline Drawing & Pad Layout
Reliability
Pin Out
Pin
1
2
3
4
5
6
Pin Out
Function
Control Voltage
Output Enable
A
Symbol
V
C
OE
GND
Output
COutput
V
CC
Option
OE
H
M
L
H
Voltage Range
(5V
CC
/ 6) to V
CC
(V
CC
/ 2) ± 15% (V
CC
/ 2)
Gnd to (V
CC
/ 6)
(5V
CC
/ 6) to V
CC
(V
CC
/ 2) ± 15% (V
CC
/ 2)
Gnd to (V
CC
/ 6)
Result
OE
OS
OD
OD
OS
OE
Case and Electrical Ground
Output
Complementary Output
Power Supply Voltage
B
M
L
Floating OE Always Results In Outputs Enabled
OE = Outputs Enabled
OS = Outputs Set (Output = H, COutput = L)
OD = Outputs Disabled
Tape and Reel (EIA-481-2-A)
Tape Dimensions (mm)
Dimension
Tolerance
VS-708
W
Typ.
16
F
Typ.
7.5
Do
Typ.
1.5
Po
Typ.
4
P1
Typ.
8
A
Typ.
178
B
Min.
1.5
C
Typ.
13
Reel Dimensions (mm)
D
Min.
20.2
N
Min.
50
W1
Typ.
16.4
W2
Max.
22.4
#Per
Reel
200
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Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-888-328-7661 • http://www.vectron.com
5
Rev: 13May2016
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