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Número de pieza | VCC6-QAB-xxx | |
Descripción | 2.5 and 3.3 Volt LVPECL Crystal Oscillator | |
Fabricantes | Vectron | |
Logotipo | ||
1. VCC6-QAB-XXX Hay una vista previa y un enlace de descarga de VCC6-QAB-xxx (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
No Preview Available ! VCC6-Q/R Series
2.5 and 3.3 volt LVPECL Crystal Oscillator
The VCC6 Crystal Oscillator
Enable/Disable
Output
Buffer /
Disable
OUT
OUT
Features
• 2.5 or 3.3V LVPECL
• 3rd Overtone Crystal for best jitter performance
• Output frequencies to 270 MHz
• Low Jitter < 1 pS rms, 12kHz to 20MHz
• Enable/Disable for test and board debug
• -10/70 or –40/85 °C operating temperature
• Hermetically sealed ceramic SMD package
• Product is compliant to RoHS directive
Applications
• SONET/SDH/DWDM
• Fiber Channel
• Ethernet, Gigabit Ethernet
• Storage Area Network
• Digital Video
• Broadband Access
Description
Vectron’s VCC6 Crystal Oscillator (XO) is quartz
stabilized square wave generator with a LV-PECL
output, operating off a 3.3 volt supply.
The VCC6 is uses 3rd overtone crystals for
frequencies under 200MHz, resulting in low jitter
performance, typically 0.5pS rms in the 12 kHz to
20MHz band.
Vectron International 267 Lowell Road, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]
1 page VCC6-Q/R Series, 2.5 and 3.3v PECL Crystal Oscillator
Enable/Disable Functional Description
Under normal operation the Enable/Disable is left open or set to a logic high state. 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 4. Absolute Maximum Ratings
Parameter
Symbol
Power Supply
Enable/Disable
Storage Temperature
VDD
VIN
Tstorage
Ratings
-0.5 to +7.0
-0.5 to VDD+0.5
-55/125
Unit
Vdc
Vdc
°C
Reliability
The VCC6 qualification tests included:
Table 5. 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 6. ESD Ratings
Model
Minimum
Conditions
Human Body Model
1500
MIL-STD-883 Method 3015
Charged Device Model
1000
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet VCC6-QAB-xxx.PDF ] |
Número de pieza | Descripción | Fabricantes |
VCC6-QAB-xxx | 2.5 and 3.3 Volt LVPECL Crystal Oscillator | Vectron |
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