VS-700
Voltage Controlled SAW Oscillator
Features
•
Industry Standard Package, 5.0 x 7.5 x 2.5 mm
•
Output Frequencies from 500 MHz to 850 MHz
•
3.3 V Operation
•
Low Jitter < 0.25 ps-rms across 50 kHz to 80 MHz
•
LV-PECL Configuration with Fast Transition Times
•
Complementary Outputs
•
Output Disable Feature
•
Pb
Product is free of lead and compliant to
EC RoHS Directive
Applications
PLL circuits for Clock Smoothing and Frequency Translation
Description
•
1-2-4 Gigabit Fibre Channel
•
10 Gigabit Fibre Channel
•
10GbE LAN / WAN
•
OC-192
•
SONET / SDH
Vcc
COutput
Output
Standard
INCITS 352-2002
INCITS 364-2003
IEEE 802.3ae
ITU-T G.709
GR-253-CORE Issue3
IEEE 802.16
•
WiMax
SAW
Description
The VS-700 is a SAW based voltage controlled oscillator that
operates at the fundamental frequency of the internal SAW
filter. The SAW filter 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 offered
on tape and reel. It has an output disable to facilitate on-
board testing.
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 28Jun06
Vc
OD
Gnd
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 1 of 7
VS-700 Voltage Controlled SAW Oscillator
Electrical Performance
Parameter
Frequency
Nominal Frequency
Absolute Pull Range
Linearity
Gain Transfer (See Pg 5)
Temperature Stability
Supply
Voltage
Current (No Load)
Outputs
Mid Level
Swing
Current
Rise Time
Fall Time
Symmetry
Spurious Suppression
Jitter (See Pg 5)
Control Voltage
Input Impedance
Modulation Bandwidth
Operating Temperature
Package Size
1.
2.
3.
4.
5.
6.
7.
8.
Symbol
f
N
APR
Lin
K
V
f
STAB
V
CC
I
CC
Minimum
Typical
500 - 850
Maximum
Units
MHz
ppm
%
ppm/V
ppm
Notes
1,2,3
1,2,3,8
2,4,8
2,8
1,6
2,3
3
2,3
2,3
6
5,6
5,6
2,3
6
6,7
6
6
1,3
±50
±5
+390
±100
2.97
3.3
55
V
CC
-1.3
650
250
250
50
60
0.120
100
500
-40
5.0 x 7.5 x 2.5
85
3.63
70
V
CC
-1.1
800
20
400
400
55
0.250
V
mA
V
mV-pp
mA
ps
ps
%
dBc
ps-rms
kΩ
kHz
°C
mm
V
CC
-1.5
500
I
OUT
t
R
t
F
SYM
φJ
Z
c
BW
T
OP
45
50
See Standard Frequencies and Ordering Information (Pg 7).
Parameters are tested with production test circuit below (Fig 1).
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 2).
Not tested in production, guaranteed by design, verified at qualification.
Integrated across 50 kHz to 80 MHz, per GR-253-CORE Issue3.
Tested with Vc = 0.3V to 3.0V.
Vc (-1.0V to +1.7V)
1
6
Vcc (+2V)
OD (-1.3V), OE (Open)
2
5
COutput
t
R
80%
t
F
SYM = 100 x t
A
/ t
B
Vcc - 1.0V
Vee (-1.3V)
3
4
50
Ω
50
Ω
Output
Vcc - 1.3V
20%
Vcc - 1.6V
Test Circuit Notes:
1) To Permit 50
Ω
Measurement of Outputs, all DC Inputs are Biased Down 1.3V.
2) All Voltage Sources Contain Bypass Capacitors to Minimize Supply Noise.
3) 50
Ω
Terminations are Within Test Equipment.
t
A
t
B
Figure 1. Test Circuit
Figure 2. 10K LV-PECL Waveform
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Page 2 of 7
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 28Jun06
VS-700 Voltage Controlled SAW Oscillator
Outline Diagram
6
5
4
6.76
[0.266]
0.86
[0.034]
1.68
[0.066]
Suggested Pad Layout
VS700LG
XXX.XXX
VI YWW
1
2
7.49±0.15
[0.295±0.006]
1.91
[0.075]
3
5.08±0.15
[0.200±0.006]
2.49±0.18
[0.098±0.007]
1.27
[0.050]
1.70
[0.067]
3.83
5.54
[0.151] [0.218]
2.34
[0.092]
1.27
[0.050]
R0.64
[0.025]
2.54
[0.100]
5.08
[0.200]
mm
[inch]
2.54
[0.100]
5.08
[0.200]
mm
[inch]
Pin Out
Pin
1
2
Marking Key
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 (3.3 V
±10%)
Symbol
V
C
OD
Position 6
L = LFF
Position 7
G = GNN
H = HNN
3
4
5
6
GND
Output
COutput
V
CC
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-700
Reel Dimensions (mm)
F
Do
Typ
1.5
W
Typ
16
Po
Typ
4
P1
Typ
8
A
Typ
178
B
Min
1.5
C
Typ
13
D
Min
20.2
N
Min
50
W1
Typ
16.4
W2
Max
22.4
Typ
7.5
# Per
Reel
200
Page 3 of 7
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 28June06
VS-700 Voltage Controlled SAW Oscillator
Absolute Maximum Ratings
Parameter
Power Supply
Input Current
Output Current
Voltage Control Range
Storage Temperature
Soldering Temperature / Duration
Symbol
V
CC
I
IN
I
OUT
V
C
T
STR
T
PEAK
/ t
P
Ratings
0 to 6
100
25
0 to V
CC
-55 to 125
260 / 40
Unit
V
mA
mA
V
°C
°C
/ sec
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 OD) draws >100 mA.
Suggested Output Load Configurations
+3.3V
0.10
µ
F
0.01
µ
F
0.10
µ
F
0.01
µ
F
150
Ω
150
Ω
+3.3V
+3.3V
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
Z = 50
Ω
Z = 50
Ω
100
Ω
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
Z = 50
Ω
Z = 50
Ω
40
Ω
40
Ω
49
Ω
49
Ω
240
Ω
240
Ω
LV-PECL to LV-PECL:
For short transmission lengths, the power
consumption could be reduced by removing the 100
Ω
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
µ
F
0.01
µ
F
0.10
µ
F
0.01
µ
F
+2.0V
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
0.01
µ
F
0.01
µ
F
Vc
OD
-1.3V
1
2
3
6
5
4
Vcc
COutput
Output
240
Ω
240
Ω
Functional Test:
Allows standard power supply configuration.
Since AC coupled, the LV-PECL levels cannot be measured.
Production Test:
Allows direct DC coupling into 50
Ω
measurement
equipment. Must bias the power supplys as shown. Similar to Figure 1.
Page 4 of 7
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 28June06
VS-700 Voltage Controlled SAW Oscillator
Typical Characteristics
800
At Ambient (22.5
o
C)
600
400
Typical Gain Transfer @ 622.0800 = +390 ppm/V
Frequency (PPM)
200
0
-200
-400
y = 389.92x - 538.34
-600
-800
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3
622 Vc Pull
Linear (622 Vc Pull)
Control Voltage (V)
-95
-100
-105
-110
-115
Typical Calculated Jitter
SONET OC-48 (12kHz-20MHz) = 0.21 ps-rms; 1.47 ps-pp
SONET OC-192 (50kHz-80MHz) = 0.12 ps-rms; 0.84 ps-pp
3
OC-192 Spec
622.08 MHz
1/f
L(f) (dBc/Hz)
-120
-125
-130
-135
-140
-145
-150
-155
10
100
1/f
2
1/f
1
OC-192 Spec Equivalent to
0.25 ps-rms @ 500 MHz
1,000
10,000
100,000
Offset (kHz)
Page 5 of 7
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 28June06
嵌入式系统
