VECTRON VX

VX-700
Voltage Controlled Crystal Oscillator
Previous Vectron Model VC-710
VX-700
Description
The VX-700 is a Voltage Controlled Crystal Oscillator that operates at the fundamental frequency of the internal HFF crystal.
The HFF crystal is a high-Q quartz device that enables the circuit to achieve low phase jitter performance over a wide operating
temperature range. The VX-700 is housed in an industry standard hermetically sealed LCC package and available in tape and reel.
Features
Applications
Ideal for PLL circuits for clock smoothing and frequency
translation
•
Fundamental VCXO with no subharmonics or spurs
•
Low Jitter, sub 1pS performance
•
Output Frequencies from 77.76 MHz to 200 MHz
•
SONET, SDH
•
3.3 V Operation
•
Synchronous Ethernet
•
LVPECL Output
•
Fiber Channel
•
Output Disable Feature
•
LAN / WAN
•
Excellent ±20ppm temperature stability,
•
Test and Measurement
•
0/70°C or -40/85°C operating temperature
•
Small Industry Standard Package, 5.0x7.5x1.8mm
•
Product is free of lead and compliant to EC RoHS Directive
Block Diagram
Complementary
Output
Output
VDD
Crystal
Oscillator
VC
E/D
Gnd
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page1
Rev: 3/27/2012
Performance Specifications
Table 1. Electrical Performance
Parameter
Symbol
Min
Typical
Maximum
Units
3.3
3.465
V
50
90
mA
Supply
1
Voltage
VDD
Current (No Load)
IDD
3.135
Frequency
2
Nominal Frequency
fN
77.7600
Absolute Pull Range 3,6
APR
±50
Linearity3
Lin
3
KV
3
fSTAB
Gain Transfer Positive (See pg 5)
Temperature Stability
200
MHz
ppm
5
+30
10
%
+150
ppm/V
±20
ppm
Outputs
Output Logic Levels3
Output Logic High
Output Logic Low
VOH
VOL
Current
IOUT
20
mA
tR
tF
1
1
ns
ns
50
55
%
V
4
Rise Time
Fall Time
Symmetry3
VDD-1.025
VDD-1.810
SYM
VDD-0.950
VDD-1.700
45
VDD-0.880
VDD-1.620
5
Jitter (12 kHz - 20 MHz BW)155.52MHz
фJ
0.3
0.5
ps
Jitter (50 kHz - 80 MHz BW)155.52MHz5
фJ
0.5
0.7
ps
фJ
3.0
ps
фJ
20
ps
-80
dBc
Period Jitter, RMS (155.520 MHz)
7
Period Jitter, Peak - Peak (155.520MHz)
Spurious Suppression
7
2
Control Voltage
Control Voltage Range for APR
VC
0.3
Control Voltage Input Impedance
ZIN
10
BW
10
Control Voltage Modulation BW
3.0
V
MΩ
20
kHz
Enable/Disable
8
Output Enabled, Option A
Output Disabled, Option A
VIH
VIL
Output Enabled, Option C 8
Output Disabled, Option C
VIL
VIH
0.7*VDD
0.2*VDD
0.7*VDD
Start-Up Time
10
Operating Temperature
TOP
ms
0/70, -20/85 or -40/85
°C
5.0 x 7.5 x 1.8
mm
Package Size
1]
2]
3]
4]
5]
6]
7]
8]
V
V
0.3*VDD
The VX-700 power supply should be filtered, eg, 0.1 and 0.01uF to ground
See Standard Frequencies and Ordering Information tables for more specific information
Parameters are tested with production test circuit below (Fig 1).
Measured from 20% to 80% of a full output swing (Fig 2).
Integrated across stated bandwidth.
Tested with Vc = 0.3V to 3.0V unless otherwise stated in part description
Broadband Period Jitter measured using Lecroy Wavemaster 8600A 6 GHz Oscilloscope, 25K samples taken. See application note.
Output is Enabled if E/D is left floating
Fig 1: Test Circuit
Fig 2: LVPECL Waveform
tR
tF
SYM = 100 x tA / tR
tA
tR
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page2
Rev: 3/27/2012
Outline Drawing & Pad Layout
6
5
4
XXX.XXXX
VX700
YWW
VDUGLA
CCC-CCCC
XXX.XX
35.328
VI YWW
XXXMXXX
1
2
3
1
2
3
Bottom View
5
6
Dimensions in inches
[mm]
Table 2. Pin Out
Pin
Symbol
Function
1
VC
VCXO Control Voltage
2
OE
Enable/Disable
**See Ordering Options**
3
GND
Case and Electrical Ground
4
Output
Output
5
COutput
Complementary Output
6
VDD
Power Supply Voltage (3.3V ±10%)
Typical Phase Noise
Typical Gain
VX-700 @ 128.00 MHz
140
200
150
120
100
100
80
Vc (volts)
0
0
0.5
1
1.5
2
2.5
3
60
Gain (ppm/V)
50
Pull (ppm)
4
-50
40
-100
-150
-200
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page3
20
0
Rev: 3/27/2012
Pull
Gain
Suggested Output Load Configurations
The VX-700 incorporates a standard PECL output scheme, which are un-terminated emitters as shown in Figure 3. There are numerous application notes
on terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 4, and a pull-up/pull-down scheme
as shown in Figure 5. An AC coupling capacitor is optional, depending on the application and the input logic requirements of the next stage.
One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-terminated, and if it one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to jitter related problems.
Figure 3 Standard PECL Output Configuration
Figure 4 Single Resistor Termination Scheme
Resistor values are typically 120 to 240 ohms
Figure 5 Pull-Up Pull-Down Termination
Reliability
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow
simulation. The VX-700 family is capable of meeting the following qualification tests:
Table 3. Environmental Compliance
Parameter
Conditions
Mechanical Shock
MIL-STD-883, Method 2002
Typical Characteristics - Phase Noise
Mechanical Vibration
MIL-STD-883, Method 2007
Solderability
MIL-STD-883, Method 2003
Gross and Fine Leak
MIL-STD-883, Method 1014
Resistance to Solvents
MIL-STD-883, Method 2015
Moisture Sensitivity Level
MSL 1
Contact Pads
Gold over Nickel
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. Permanent damage is
also possible if OD or Vc is applied before Vcc.
Table 4. Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
Power Supply
VDD
0 to 6
V
Output Current
IOUT
25
mA
Voltage Control Range
VC
0 to VCC
V
Storage Temperature
TS
-55 to 125
°C
Soldering Temp/Time
TLS
260 / 40
°C / sec
Although ESD protection circuitry has been designed into the VX-700 proper precautions should be taken when handling
and mounting. VI employs a human body model (HBM) and a charged device model (CDM) for ESD susceptibility testing
and design protection evaluation.
Table 5. ESD Ratings
Model
Minimum
Conditions
Human Body Model
500V
MIL-STD-883, Method 3015
Charged Device Model
500V
JESD22-C101
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page4
Rev: 3/27/2012
IR
IR Reflow
Table 6. Reflow Profile (IPC/JEDEC J-STD-020C)
Parameter
Symbol
Value
PreHeat Time
Ts-min
Ts-max
tS
60 sec Min, 180 sec Max
150°C
200°C
Ramp Up
RUP
3 °C/sec Max
Time Above 217 °C
tL
60 sec Min, 150 sec Max
Time To Peak Temperature
T25C to peak
480 sec Max
Time at 260 °C
tP
20 sec Min, 40 sec Max
Ramp Down
RDN
6 °C/sec Max
The device is 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 VX-700 device is
hermetically sealed so an aqueous wash is
not an issue.
Termination Plating:
Electroless Gold Plate over Nickel Plate
Tape & Reel (EIA-481-2-A)
Table 7. Tape and Reel Information
Tape Dimensions (mm)
Reel Dimensions (mm)
Dimension
W
F
Do
Po
P1
A
B
C
D
N
W1
W2
Tolerance
Typ
Typ
Typ
Typ
Typ
Typ
Min
Typ
Min
Min
Typ
Max
# Per
Reel
VX-700
16
7.5
1.5
4
8
178
1.5
13
20.2
50
16.4
22.4
200
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page5
Rev: 3/27/2012
Table 8. Standard Output Frequencies (MHz)
77.76000
80.00000
81.00000
88.47360
91.08000
92.16000
93.31200
96.00000
100.00000
101.99200
102.40000
106.25000
108.00000
110.00000
112.00000
112.64000
120.00000
122.80000
122.88000
124.41600
125.00000
128.00000
133.33000
134.21770
134.40000
135.00000
138.04860
139.23000
139.26400
139.50000
143.36000
144.00000
148.35160
148.50000
150.00000
153.60000
154.00000
155.52000
156.25000
157.50000
160.00000
161.13280
162.00000
166.62700
166.62860
167.33160
168.04067
175.00000
175.59375
180.00000
184.00000
184.32000
186.66600
187.50000
192.00000
192.45600
200.0000
Ordering Information
VX-700- E C E - K X A N - xxxMxxxxxx
Frequency in MHz
Product
VCXO, 5x7 Package
Other (Future Use)
N: Standard
Voltage Options
E: +3.3 Vdc ±5%,
Enable/Disable
A: Enable High
C: Enable Low
X: No Enable/Disable Feature
(No Internal Connection)
Stability
X: Standard
E: ±20ppm Temperature Stability
Output
C: LVPECL
Temp Range
T: 0/070°C
I: -20/+85°C
E: -40/+85°C
Absolute Pull Range
G: ±30ppm
K: ±50ppm
*Note: not all combination of options are available.
Other specifications may be available upon request.
Example: VX-700-ECE-KXAN-155M520000
For Additional Information, Please Contact
USA:
Europe:
Asia:
Vectron International
267 Lowell Road
Hudson, NH 03051
Tel: 1.888.328.7661
Fax: 1.888.329.8328
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 3328.4784.17
Fax: +49 (0) 3328.4784.30
Vectron International
1F-2F, No 8 Workshop, No 308 Fenju Road
WaiGaoQiao Free Trade Zone
Pudong, Shanghai, China 200131
Tel: 86.21.5048.0777
Fax: 86.21.5048.1881
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page6
Rev: 3/27/2012