VX-705
Voltage Controlled Crystal Oscillator
Previous Vectron Model VC-705/C5250
VX-705
Description
Vectron’s VX-705 Voltage Controlled Crystal Oscillator (VCXO) is a quartz stabilized square wave generator with a CMOS output. The VX-705 uses
fundamental crystals resulting in low jitter performance and a monolithic IC which improves reliability and
reduces cost.
Features
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CMOS output VCXO
Output Frequencies from 77.76 MHz to 160 MHz
3.3 V Operation
Fundamental Crystal Design with Low Jitter Performance
Output Disable Feature
Excellent 20ppm Temperature Stability,
0/70°C or -40/85°C Operating Temperature
Small Industry Standard Package, 5.0x7.0x1.8mm
Product is free of lead and compliant to EC RoHS Directive
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Applications
SONET/SDH/DWDM
Ethernet, SyncyE, GE
xDSL, PCMIA
Digital Video
Broadband Access
Base Stations, Picocells
Block Diagram
V
DD
NC
Output
Crystal
Oscillator
V
C
E/D
Gnd
Rev: 12/02/2010
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page1
Performance Specifications
Performance Specifications
Table 1. Electrical Performance
Parameter
Voltage
1
Current
2
Nominal Frequency
3
Absolute Pull Range
2,6
,
ordering option
Linearity
2
Gain Transfer
2
Temperature Stability
Output Logic Levels
2
Output Logic High
Output Logic Low
Load
Rise Time
2,4
Fall Time
2,4
Symmetry
2
Period Jitter, RMS
5,7
(155.520 MHz)
Period Jitter, pk-pk
5,7
(155.520MHz)
Phase Noise
8
10Hz
100Hz
1kHz
10kHz
100kHz
1MHz
10MHz
Control Voltage
Control Voltage Range for Pull Range
Control Voltage Input Impedance
Control Voltage Modulation BW
Output Enable/Disable
9
Output Enabled
Output Disabled
Start-Up Time
Operating Temp, Ordering Option
Package Size
1]
2]
3]
4]
5]
6]
7]
8]
9]
Symbol
V
DD
I
DD
Min
Supply
3.135
Frequency
Typical
3.3
Maximum
3.465
40
Units
V
mA
MHz
ppm
%
ppm/V
ppm
V
f
N
APR
Lin
K
V
f
STAB
77.76
±50, ±80
5
+80
±20
Outputs
160.00
V
OH
V
OL
I
OUT
t
R
t
F
SYM
фJ
фJ
0.9*V
DD
0.1*V
DD
15
5
5
45
50
3.0
23
-57
-87
-118
-146
-154
-154
-154
55
pF
ns
ns
%
ps
ps
dBc/Hz
V
C
Z
IN
BW
V
IH
V
IL
T
S
T
OP
0.3
100
10
0.9*V
DD
3.0
V
KΩ
kHz
V
0.1*V
DD
10
0/70, -20/70, or -40/85
5.0 x 7.0 x 1.8
ms
°C
mm
The power supply should have by-pass capacitors as close to the supply and to ground as possible, for examples 0.1 and 0.01uF
Parameters are tested with production test circuit below (Fig 1).
See Standard Frequencies and Ordering Information tables for more specific information
Measured from 20% to 80% of a full output swing (Fig 2).
Not tested in production, guaranteed by design, verified at qualification.
Tested with Vc = 0.3V to 3.0V unless otherwise stated in part description
Broadband Period Jitter measured using Wavecrest SIA3300C, 90K samples.
Phase Noise is measured with an Agilent E5052A.
The Output is Enabled if the Enable/Disable is left open.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page2
Rev: 12/02/2010
Test Circuit
Waveform
I
DD
0.8*VDD
6
+
V
DD
-
.1μF
.01μF
I
C
V
C
1
+
-
4
3
15pF
50%
0.2*VDD
t
R
t
F
On Time
Period
Fig 1: Test Circuit
Fig 2: Waveform
Table 2. Absolute Maximum Ratings
Parameter
Power Supply
Voltage Control Range
Storage Temperature
Soldering Temp/Time
Symbol
V
DD
V
C
TS
T
LS
Ratings
0 to 6
0 to V
CC
-55 to 125
260 / 20
Unit
V
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. Permanent damage is also possible if OD or Vc is applied before Vcc.
Typical Phase Noise
Typical Gain
Typical Characteristics - Phase Noise and Gain Curve
VX-705 @ 122.88 MHz
150
120
100
100
50
80
Pull (ppm)
0
0
0.5
1
1.5
Vc (volts)
2
2.5
3
60
-50
Gain (ppm/V)
Pull
Gain
40
-100
-150
20
-200
0
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page3
Rev: 12/02/2010
Reliability
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow
simulation. The VX-705 family is capable of meeting the following qualification tests:
Table 3. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Solderability
Gross and Fine Leak
Resistance to Solvents
Moisture Sensitivity Level
Contact Pads
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 2015
MSL 1
Gold over Nickel
Handling Precautions
Although ESD protection circuitry has been designed into the VX-705 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 4. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
500V
500V
Conditions
MIL-STD-883, Method 3015
JESD22-C101
Table 5. Reflow Profile
Parameter
PreHeat Time
Ts-min
Ts-max
Ramp Up
Time Above 217 °C
Time To Peak Temperature
Symbol
t
S
Value
60 sec Min, 180 sec Max
150°C
200°C
3 °C/sec Max
60 sec Min, 150 sec Max
480 sec Max
R
UP
t
L
T
AMB-P
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-705 device is hermetically sealed so an
aqueous wash is not an issue.
Termination Plating:
Electroless Gold Plate over Nickel Plate
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page4
Rev: 12/02/2010
Outline Drawing & Pad Layout
6
VX705
5
4
YWW
.197±.006
[5±0.15]
3
.082
.061
[2.09]
[1.56]
.055
[1.40]
1
2
3
.143
[3.63]
6
.050
[1.27]
.200±.006
[5.08±0.15]
5
4
.100
[2.54]
.079
[2.01]
.100
[2.54]
.200
[5.08]
.165
[4.19]
.071
[1.80]
CCC-CCCC
XXXMXXX
1
2
.276±.006
[7±0.15]
Pad Layout
Dimensions in inches (mm)
[MM]
Inch
Table 6. Pin Out
Pin
1
2
3
4
5
6
Symbol
V
C
E/D
GND
Output
N/C
Function
VCXO Control Voltage
Enable Disable
Case and Electrical Ground
Output
No Connect
Power Supply Voltage
V
DD
Tape & Reel (EIA-481-2-A)
Table 7. Tape and Reel Information
Tape Dimensions (mm)
Dimension
Tolerance
VX-705
Reel Dimensions (mm)
Po
Typ
4
W
Typ
16
F
Typ
5.5
Do
Typ
1.5
P1
Typ
8
A
Typ
178
B
Min
1.78
C
Typ
13
D
Min
20.6
N
Min
55
W1
Typ
12.4
W2
Max
22.4
# Per
Reel
500
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page5
Rev: 12/02/2010
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