VCC6-L/V
2.5 or 3.3 volt LVDS Oscillator
Features
•
2.5 or 3.3 V LVDS
•
3rd Overtone Crystal for best jitter performance
•
Output frequencies to 270 MHz
•
Low Jitter < 1 pS rms, 12kHz to 20MHz
•
Enable/Disable output for test and board debug
•
-10/70 or –40/85
°C
operating temperature
•
Hermetically sealed ceramic SMD package
•
Product is compliant to RoHS directive
and fully compatible with lead free assembly
The VCC6 Crystal Oscillator
Applications
•
SONET/SDH/DWDM
•
Ethernet, Gigabit Ethernet
•
Storage Area Network
•
Digital Video
•
Broadband Access
f
o
Output
Buffer /
Disable
Description
Vectron’s VCC6 Crystal Oscillator (XO) is quartz
stabilized square wave generator with a LVDS
output, operating off a 2.5 or 3.3 volt supply.
The VCC6 uses a 3
rd
overtone crystals for output
frequencies < 200MHz resulting in low jitter
performance, typically 0.3pS rms in the 12 kHz to
20MHz band.
f
o
Vectron International 267 Lowell Road, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VCC6-L/V Series, 2.5 and 3.3V LVDS Crystal Oscillator
Performance Characteristics
Table 1. Electrical Performance
Parameter
Frequency
Supply Voltage
1
L option
Supply Voltage
1
V option
Supply Current, Output Enabled
Supply Current, Output Disabled
Output Logic Levels
Output Logic High
2
Output Logic Low
2
Differential Output
Differential Output Error
Offset Voltage
Offset Error
Output Leakage Current
Transition Times
Rise Time
2
Fall Time
2
Symmetry or Duty Cycle
3
Operating temperature (ordering
option)
Stability (ordering
option)
4
RMS Jitter, 12kHz to 20 MHz
RMS Jitter
Output Enabled
5
Output Disabled
5
Output Enable/Disable time
Package Size
Symbol
f
O
V
DD
V
DD
I
DD
I
DD
V
OH
V
OL
V
OD
VOS
VOS
Min
10
3.15
2.375
Typical
3.3
2.5
Maximum
270
3.45
2.625
60
30
1.6
454
50
1.375
50
10
600
600
55
Units
MHz
V
mA
uA
V
V
mV
mV
V
mV
uA
ps
ps
%
°C
ppm
pS
pS
V
V
nS
mm
0.9
247
1.125
1.43
1.10
330
1.25
t
R
t
F
SYM
45
50
-10/70 or –40/85
±25, ±50 or ±100
0.3
2.5
0.7
0.7*VDD
0.3*VDD
400
5.0 x 7.0 x 1.5
1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.
2. Figure 1 defines these parameters.
3. Symmetry is measured defined as On Time/Period.
4. Includes calibration tolerance, operating temperature, supply voltage variations, aging (40 degreesC/10 years) and shock and
vibration (not under operation).
5. Output will be enabled if enable/disable is left open.
t
R
80
%
t
F
Vs
20
%
On Time
Period
Figure 1. Output Waveform
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VCC6-L/V Series, 2.5 and 3.3V LVDS Crystal Oscillator
Outline Diagram, Pad Layout and Pin Out
Contact Pad Plating: gold over nickel
Table 2. VCC6-LCx and VCC6-VCx Pinout
Pin #
Symbol
1
2
3
4
5
6
E/D
NC
GND
f
O
Cf
o
V
DD
Function
Tristate Function
This pin has no internal connection and is floating.
Ground
Output Frequency
Complementary Output Frequency
Supply Voltage
Table 3. VCC6-LAx and VCC6-VAx Pinout
Pin #
Symbol
1
2
3
4
5
6
NC
ED
GND
f
O
Cf
o
V
DD
Function
This pin has no internal connection and is floating.
Tristate Function
Ground
Output Frequency
Complementary Output Frequency
Supply Voltage
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VCC6-L/V Series, 2.5 and 3.3V LVDS Crystal Oscillator
Tape and Reel
J
F
D
A
E
C
G
B
L
I
H
K
Table 4. Tape and Reel Dimensions (mm)
Tape Dimensions
Product
A
VCC6
16
B
7.5
C
1.5
D
4
E
8
Reel Dimensions
F
G
H
2
21
13
I
60
J
2
K
17
L
180
# Per
Reel
250
Enable/Disable Functional Description
Under normal operation the Enable/Disable is left open, or set to a logic high state, the VCC6 is an
oscillation mode and outputs are active. When the E/D is set to a logic low, the oscillator stops and the
both the output and complementary outputs are in a high impedance state. This helps facilitate board
testing and troubleshooting.
Power Saving Pull-Up Resistor
The E/D pull-up resistor changes in response to the input logic level; the pull-up resistor is a large value
when E/D is set to a logic low, which reduces the current consumed. When E/D is open, or set to a logic
high, the pull-up resistance becomes a smaller value which helps decrease the effects of external noise.
Absolute Maximum Ratings
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 data sheet. Exposure to absolute maximum ratings for extended periods may
adversely affect device reliability.
Table 5. Absolute Maximum Ratings
Parameter
Symbol
Power Supply
V
DD
Enable/Disable
V
IN
Storage Temperature
Tstorage
Ratings
-0.5 to +7.0
-0.5 to V
DD
+0.5
-55/125
Unit
Vdc
Vdc
°C
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VCC6-L/V series, 2.5 and 3.3V LVDS Crystal Oscillator
Reliability
The VCC6 qualification tests include the following:
Table 6. Environnemental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Solderability
Gross and Fine Leak
Resistance to Solvents
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 2016
Handling Precautions
Although ESD protection circuitry has been designed into the the VCC6, proper precautions should be taken
when handling and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for
ESD susceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit
parameters used to define the model. Although no industry wide standard has been adopted for the CDM, a
standard HBM of resistance = 1.5kohms and capacitance = 100pF is widely used and therefore can be
used for comparison purposes.
Table 7. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1000
1000
Conditions
MIL-STD-883 Method 3115
JESD 22-C101
Suggested IR profile
The VCC6 has been 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 and parameters are listed in Table 7.
The VCC6 is hermetically sealed so an aqueous wash is not an issue.
Table 8. Reflow Profile
Parameter
PreHeat Time
Ramp Up
Time Above 217
o
C
Time To Peak Temperature
Time At 260 C (max)
Ramp Down
o
Symbol
t
S
R
UP
t
L
t
AMB-P
t
P
R
DN
Value
60 sec Min, 180 sec Max
3
o
C/sec Max
60 sec Min, 150 sec Max
480 sec Max
10 sec Max
6
o
C/sec Max
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
模拟与混合信号
