VS-709
Dual Frequency VCSO
VS-709
Description
The VS-709 is a Voltage Controlled SAW Oscillator that operates at the fundamental frequency from one of the two internal SAW filters. The
SAW filters are high-Q Quartz devices that enable the circuit to achieve low phase jitter performance over a wide operating temperature
range. A divider circuit is deployed for output frequencies less than 600 MHz. The selectable dual oscillator is housed in a hermetically
sealed leadless surface mount package and offered on tape and reel. It has a tri-state Frequency Select function that provides one of three
conditions: Frequency 1, Output Disable, or Frequency 2.
Features
• Industry Standard Package, 5.0 x 7.0 x 1.8 mm
• 5th Generation ASIC Technology for Ultra Low Jitter
120 fs-rms (fN = 622.08 MHz, 12 kHz to 20 MHz)
105 fs-rms (fN = 622.08 MHz, 50 kHz to 80 MHz)
• Output Frequencies from 150 MHz to 1000 MHz
• Spurious Suppression, 90 dBc Typical
• 2.5V or 3.3V Supply Voltage
• LVPECL or LVDS Output Configurations
• Tri-State Frequency Select (F1, OD, F2)
• Compliant to EC RoHS6 Directive
Applications
• PLL circuits for Clock Smoothing and Frequency Translation
Description
• SONET / SDH
• OTN (Optical Transport Network)
• 10 GbE (Gigabit Ethernet)
• 10 GFC (Gigabit Fibre Channel)
• 40 GbE & 100 GbE
• Synchronous Ethernet
• WiMax
Standard
• GR-253-CORE
• ITU-T G.709/Y.1331
• IEEE 802.3ae
• INCITS 364-2003
• IEEE 802.3ba
• ITU-T G.8261
• IEEE 802.16
Block Diagram
Vcc
COutput
Output
SAW 1
LVPECL
LVDS
SAW 2
1
X
X = 1,2,4
Vc
FS
Gnd
Figure 1. Functional block diagram
1 of 9
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
1
Rev: 02Mar2014
Performance Specifications
Electrical Performance
Parameter
Nominal Frequency
Absolute Pull Range
Linearity
Gain Transfer
Temperature Stability
Symbol
f
N
APR
Lin
K
V
f
STAB
Min
Frequency
150
±50
Typical
Maximum
1000
Units
MHz
ppm
Notes
1,2,3
1,2,3,9
2,4,9
2,9
1,6
±7
+445
±100
%
ppm/V
ppm
Supply
Voltage (± 10%)
Current (Typical 50 Ω Load)
Current (No Load)
V
CC
I
EE
I
CC
2.97
3.3
73
60
75
3.63
V
mA
mA
2,3
3
3
Outputs
Mid Level
Single Ended Swing
Differential Swing
Current
Rise Time
Fall Time
Symmetry
Spurious Suppression (Non-Harmonic)
Jitter (600 ≤ f
N
≤ 1000)
Jitter (300 ≤ f
N
≤ 500)
Jitter (150 ≤ f
N
≤ 250)
ΦJ
ΦJ
ΦJ
I
OUT
t
R
t
F
SYM
45
85
180
180
50
90
150
190
280
V
CC
-1.5
V
CC
-1.3
750
1.5
20
250
250
55
V
CC
-1.1
mV
mV-pp
V-pp
mA
ps-pp
ps-pp
%
dBc
fs-rms
fs-rms
fs-rms
2,3
2,3
2,3
7
6,7
6,7
2,3
7
7,8
7,8
7,8
Control Voltage
Control Voltage
Input Impedance (F1 or F2 Enabled)
Input Impedance (Outputs Disabled)
Modulation Bandwidth
Operating Temperature
Package Size
V
C
Z
C
Z
C
BW
T
OP
-40
5.0 x 7.0 x 1.8
0.3
123
472
200
+85
3.0
V
kΩ
kΩ
kHz
°C
mm
3
7
7
7
1,3
Notes:
See Standard Frequencies and Ordering Information (Pg 8).
Parameters are tested with production test circuit (Pg 3).
Parameters are tested at ambient temperature with test limits guard-banded for specified operating temperature.
Measured as the maximum deviation from the best straight-line fit, per MIL-0-55310.
The Vc Model is described below (Fig 1).
Parameters are described with waveform diagram below (Fig 2).
Not tested in production, guaranteed by design, verified at qualification.
For Frequencies > 600 MHz, Jitter is integrated across 50 kHz to 80 MHz.
For Frequencies < 600 MHz, Jitter is integrated across 12 kHz to 20 MHz. (Both per GR-253-CORE Issue3)
9.
Tested with Vc = 0.3V to 3.0V.
1.
2.
3.
4.
5.
6.
7.
8.
123kΩ
V
C
3pF
1.65V
Figure 1. Vc Model - F1 or -F2 Enabled
2 of 9
Figure 2. 10K LV-PECL Waveform
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
2
Rev: 02Mar2014
Absolute Maximum Ratings
Absolute Maximum Ratings
Parameter
Power Supply
Input Current
Output Current
Voltage Control Range
Frequency Select
Storage Temperature
Soldering Temperature/Duration
Symbol
V
CC
I
IN
I
OUT
V
C
FS
T
STR
T
PEAK
/t
P
Ratings
0 to 6
100
25
0 to V
CC
0 to V
CC
-55 to 125
260 / 40
Unit
V
mA
mA
V
V
0C
0C/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 FS)
draws >100 mA.
Test Circuits & Output Load Configurations
Functional Test:
Allows use of standard power supply biasing
configuration. Pull down resistors are used for LV-PECL outputs
and are removed for with LVDS outputs. Since the LVDS outputs
are AC coupled, the output DC levels cannot be measured.
Production Test:
DC levels shown for Vee, FS,
& Vc are for devices configured for 3.3V operation.
LV-PECL outputs are DC coupled to 50Ω test
equipment. LVDS outputs are connected to a digital volt meter,
then AC coupled to the test equipment. The digitial volt meter
allows for Mid Level & Swing measurements.
LV-PECL to LV-PECL:
For short transmission lengths,
the pulldown resistor values shown provide reasonable
powerconsumption and waveform performance.
LVDS to LVDS:
The 100Ω resistor should be removed if this load
isprovided internally within the LVDS receiver.
3 of 9
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
3
Rev: 02Mar2014
Typical Characteristics: Vc Pull, Vc Pull Linearity, & Vc Pull Slope
4 of 9
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
4
Rev: 02Mar2014
Typical Characteristics: Phase Noise & Jitter
F1
PN / Jitter
L (f ) @ 10
L (f ) @ 100
L (f ) @ 1K
L (f ) @ 10K
L (f ) @ 100K
L (f ) @ 1M
L (f ) @ 10M
L (f ) @ 100M
12K - 20M
50K - 80M
F2
669.33
-33.6
-62.6
-88.1
-110.7
-131.8
-147.6
-148.3
-148.4
112.7
121.1
F1
644.53
-36.1
-64.6
-90.2
-112.1
-132.6
-149.0
-150.2
-150.5
98.0
100.9
F2
698.81
-34.6
-63.6
-89.2
-111.2
-131.7
-147.4
-147.9
-147.6
104.2
119.6
F1
657.42
-33.1
-62.0
-88.4
-111.0
-132.0
-148.5
-149.7
-149.8
107.9
106.5
F2
707.35
-32.2
-61.4
-87.6
-110.0
-131.0
-147.0
-147.2
-147.4
115.7
120.0
F1
718.86
-31.9
-62.0
-87.0
-109.0
-129.6
-148.0
-149.3
-148.8
120.3
108.1
F2
909.71
-31.6
-60.2
-84.7
-106.3
-126.8
-144.6
-144.0
-144.2
138.3
147.6
622.08
-32.9
-62.6
-88.4
-111.1
-132.2
-148.8
-149.9
-149.9
111.2
110.7
Units
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
fs-rms
fs-rms
5 of 9
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
5
Rev: 02Mar2014
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
