VVC4 Voltage Controlled Crystal Oscillator
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 2. Absolute Maximum Ratings
Parameter
Power Supply
Storage Temperature
Voltage Control Range
Symbol
VDD
Tstorage
VC
Ratings
6
-55/125
0 to VDD
Unit
Vdc
°C
V
Reliability
The VVC4 is capable of meeting the following qualification tests.
Table 3. Environmental Compliance
Parameter
Conditions
Mechanical Shock
Mechanical Vibration
Solderability
Gross and Fine Leak
Resistance to Solvents
Moisture Sensitivity Level
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
1
Handling Precautions
Although ESD protection circuitry has been designed into the the VVC4, 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 4. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1500
1000
Conditions
MIL-STD-883 Method 3115
JESD 22-C101
The VVC4 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 and parameters are listed in the table
below. The contact pads are gold over nickel so lower IR reflow temperatures such as 220°C can be
used (device is backwards compatible with a lead solder assembly).
The VVC4 is hermetically sealed so an aqueous wash is not an issue.
Table 5. Reflow Profile (IPC/JEDEC J-STD-020)
Parameter
Symbol
Value
PreHeat Time
t S
60 sec Min, 180 sec Max
Ramp Up
R UP
t L
3 oC/sec Max
60 sec Min, 150 sec Max
480 sec Max
Time Above 217 oC
Time To Peak Temperature
Time At 260 oC
t AMB-P
t P
20 sec Min, 40 sec Max
6 oC/sec Max
Ramp Down
R DN
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