VS-500
Voltage Controlled SAW Oscillator
Features
•
Improved High Performance ASIC
•
Industry Standard Package, 9 x 14 x 4.5 mm
•
Output Frequencies from 155 MHz to 850 MHz
•
3.3 V or 5.0 V Operation
•
At 155.52 MHz, Jitter < 0.50 ps-rms (12 kHz to 20 MHz)
•
At 622.08 MHz, Jitter < 0.30 ps-rms (50 kHz to 80 MHz)
•
LV-PECL, PECL, or ECL Configurations
•
Complementary Outputs
•
Output Disable Feature
Applications
PLL circuits for Clock Smoothing and Frequency Translation
Description
Vcc
COutput
Output
Standard
INCITS/T11 Project 1413-D
IEEE 802.3ae
ITU-T G.709
GR-253-CORE Issue3
•
10G Fibre Channel
•
10GbE LAN / WAN
•
OC-192
SAW
•
SONET / SDH
Description
Vc
OD
Gnd
The VS-500 is a SAW based voltage controlled oscillator that
operates at the fundamental frequency of the internal SAW filter.
This resonator 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 J-lead surface mount package offered on tape and reel.
It has an output disable to facilitate on-board testing.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 1 of 8
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 14Nov03
VS-500 Voltage Controlled SAW Oscillator
Electrical Performance
Parameter
Frequency
Nominal Frequency
Absolute Pull Range
Linearity
Gain Transfer @ 155.52 MHz (See Pg 5/6)
Gain Transfer @ 622.08 MHz (See Pg 5/6)
Temperature Stability @ 155.52 MHz
Temperature Stability @ 622.08 MHz
Supply
Voltage
Current (No Load)
Outputs
Mid Level
Swing
Current
Rise & Fall Time
Symmetry
Spurious Suppression
Jitter @ 155.52 MHz (See Pg 5/6)
Jitter @ 622.08 MHz (See Pg 5/6)
Control Voltage
Input Impedance (LV-PECL or PECL)
Input Impedance (ECL)
Modulation Bandwidth
Operating Temperature
Package Size
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Symbol
f
N
APR
Lin
K
V
K
V
f
STAB
f
STAB
V
CC
I
CC
Minimum
Typical
150 - 850
Maximum
Units
Notes
±50
±5
+691/+435
+434/+281
±100
±150
3.3/5.0
55
V
CC
-1.3
850
250
50
60
0.440
0.230
100
10
500
3.63/5.5
80
V
CC
-1.1
20
400
55
MHz
1,2,3
ppm 1,2,3,9/10
2,4,9/10
%
2,9/10
ppm/V
2,9/10
ppm/V
1,6
ppm
1,6
ppm
V
mA
V
mV-pp
mA
ps
%
dBc
ps-rms
ps-rms
kΩ
kΩ
kHz
°C
mm
2,3
3
2,3
2,3
6
5,6
2,3
6
6,7
6,8
6
6
6
1,3
2.97/4.5
V
CC
-1.5
I
OUT
t
R,
t
F
SYM
φJ
φJ
Z
c
Z
c
BW
T
OP
-40
45
50
85
9.0 x 14.0 x 4.5
See Standard Frequencies and Ordering Information (Pg 8).
Parameters are tested with production test circuit below (Fig 2).
Parameters are tested at ambient temperature with test limits guardbanded for specified operating temperature.
Measured as the maximum deviation from the best straight-line fit, per MIL-0-55310.
Measured from 20% to 80% of a full output swing (Fig 1).
Not tested in production, guaranteed by design, verified at qualification.
Integrated across 12 kHz to 20 MHz, per GR-253-CORE Issue3.
Integrated across 50 kHz to 80 MHz, per GR-253-CORE Issue3.
Tested with Vc = 0.3V to 3.0V.
Tested with Vc = 0.5V to 4.5V.
(-1.3V to +2V)
(+2V)
1
2
3
6
5
4
Output
COutput
t
R
80%
t
F
SYM = 100 x t
A
/ t
B
Vcc - 1.0V
Disable, Enable
(-1.3V, Open)
Vcc - 1.3V
20%
Vcc - 1.6V
(-1.3V)
50Ω
50Ω
t
A
t
B
Test Circuit Notes:
1) To Permit 50Ω Measurement of Outputs, all DC Inputs are Biased Down 1.3V.
2) All Voltage Sources Contain Bypass Capacitors to Minimize Supply Noise.
3) 50Ω Terminations are Within Test Equipment.
Figure 1. 10K LV-PECL Waveform
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 2 of 8
Figure 2. 3.3V Test Circuit
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 14Nov03
VS-500 Voltage Controlled SAW Oscillator
Outline Diagram
6
5
4
Pad Layout
VS-500-LFF-GNN
XXX.XXX
VI YWW
1
2
3
8.89±0.15
[0.350±0.006]
7.63
[0.300]
1.27
[0.050]
13.97±0.20
[0.550±0.008]
0.46±0.05
[0.018±0.002]
[
+0.20
4.49
-0.30
+0.008
0.177-0.012
8.80
[0.346]
]
3.00
[0.118]
2.54
[0.100]
5.08
[0.200]
mm
[inch]
5.08±0.13
[0.200±0.005]
2.54±0.13
[0.100±0.005]
mm
[inch]
Pin Out
Pin
1
2
Symbol
V
C
OD
Function
VCSO Control Voltage
Output Disable
*
Disabled = LV-CMOS Logic 0 (or GND)
Enabled = LV-CMOS Logic 1 (or Open)
Case and Electrical Ground
VCSO Output
VCSO Complementary Output
Power Supply Voltage (3.3V / 5.0V
±10%)
3
4
5
6
GND
Output
COutput
V
CC
*
For 5.0V Operation, CMOS Levels Should Be Applied.
Tape and Reel (EIA-481-2-A)
Po
ØDo
W2
F
W
D
C
N
A
P1
W1
B
Tape Dimensions (mm)
Dimension
Tolerance
VS-500
Reel Dimensions (mm)
F
Typ
11.5
W
Typ
24
Do
Typ
1.5
Po
Typ
4
P1
Typ
12
A
Typ
330
B
Min
1.5
C
Typ
13
D
Min
20.2
N
Min
100
W1
Typ
24.4
W2
Max
30.4
# Per
Reel
200
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 3 of 8
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 14Nov03
VS-500 Voltage Controlled SAW Oscillator
Absolute Maximum Ratings
Parameter
Power Supply
Output Current
Voltage Control Range
Storage Temperature
Soldering Temp/Time
Symbol
V
CC
Iout
V
C
TS
T
LS
Ratings
0 to 6
25
0 to V
CC
-55 to 125
220/10
Unit
V
mA
V
°C
°C/sec
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is
not implied at these or any other conditions in excess of conditions represented in the operational sections of this
datasheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability.
Suggested Output Load Configurations (3.3V Operation)
+3.3V
0.10
µF
0.01
µF
0.10
µF
0.01
µF
150Ω
150Ω
+3.3V
+3.3V
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
Z = 50Ω
Z = 50Ω
100Ω
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput Z = 50Ω
Output
Z = 50Ω
40Ω
40Ω
49Ω
49Ω
240Ω
240Ω
LV-PECL to LV-PECL:
For short transmission lengths, the power
consumption could be reduced by removing the 100Ω resistor and
doubling the value of the pull down resistors.
LV-PECL to LVDS:
Restricted for short transmission lengths.
Configuration may require modification depending on LVDS receiver.
+3.3V
0.10
µF
0.01
µF
0.10
µF
0.01
µF
+2.0V
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
0.01
µF
Vc
OD
-1.3V
1
2
3
6
5
4
Vcc
COutput
Output
0.01
µF
240Ω
240Ω
Functional Test:
Allows standard power supply configuration.
Since AC coupled, the LV-PECL levels cannot be measured.
Production Test:
Allows direct DC coupling into 50Ω measurement
equipment. Must bias the power supplies as shown. Similar to Figure 1.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 4 of 8
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 14Nov03
VS-500 Voltage Controlled SAW Oscillator
Typical Characteristics (3.3V Operation)
1100
1000
900
800
700
600
500
400
300
200
100
0
-100
-200
-300
-400
-500
-600
-700
-800
-900
0.3
0.6
0.9
1.2
Frequency (PPM)
Vc Pull Characteristics (22.5
o
C)
Typical Gain Transfer @ 155.52 = +691 ppm/V
Typical Gain Transfer @ 622.08 = +434 ppm/V
155_3V Vc Pull
622_3V Vc Pull
y = 691.39x - 1010.34
y = 433.82x - 606.16
Linear (155_3V Vc Pull)
Linear (622_3V Vc Pull)
1.5
1.8
2.1
2.4
2.7
3
Control Voltage (V)
Calculated Jitter @ 155.52 MHz (22.5
o
C)
SONET OC-48 (12kHz-20MHz) = 0.442 ps-rms; 3.09 ps-pp
SONET OC-192 (50kHz-80MHz) = 0.685 ps-rms; 4.80 ps-pp
Calculated Jitter @ 622.08 MHz (22.5
o
C)
SONET OC-48 (12kHz-20MHz) = 0.244 ps-rms; 1.71 ps-pp
SONET OC-192 (50kHz-80MHz) = 0.214 ps-rms; 1.50 ps-pp
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 5 of 8
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 14Nov03
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