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VT-704 Schematic ( PDF Datasheet ) - Vectron

Teilenummer VT-704
Beschreibung Temperature Compensated Crystal Oscillator
Hersteller Vectron
Logo Vectron Logo 




Gesamt 8 Seiten
VT-704 Datasheet, Funktion
VT-704
Temperature Compensated Crystal Oscillator
PRELIMINARY
VT-704
Description
Vectron’s VT-704 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, Clipped sine wave or CMOS output,
analog temperature compensated oscillator, operating off a 2.5V to 3.3 volt supply in a hermetically sealed 7.0 x 5.0 mm ceramic
package.
Features
• Clipped Sine Wave or CMOS Output
• 5.000 - 52.000MHz Output Frequency
• ±0.5ppm Temperature Stability
• Optional Frequency Tuning
• Fundamental Crystal Design
• Gold over nickel contact pads
• Hermetically Sealed Ceramic SMD package
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Applications
• Femto Cells
• Base Stations
• IP Networking
• Global Positioning Systems
• Point to Point Radio
• Manpack Radio
• Test and Measurement
Block Diagram
VDD
Crystal
Output
Analog
Temperature
Comp.
(OVCpOtNiToRnOLal)
Gnd
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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VT-704 Datasheet, Funktion
Reliability
Table 5. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Fine and Gross Leak
Resistance to Solvents
Moisture Sensitivity Level
Contact Pads
Condition
MIL-STD-883 Method 2002
MIL-STD-883 Method 2007
MIL-STD-883 Method 1010
MIL-STD-883 Method 2003
MIL-STD-883 Method 1014
MIL-STD-883 Method 2015
MSL1
Gold over Nickel
IR Reflow
Suggested IR Profile
Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 6. Contact pads are
gold over nickel and lower maximum temperatures can also be used, such as 220°C.
Table 6. Reflow Profile
Parameter
PreHeat Time
Ts-min
Ts-max
Ramp Up
Time above 217C
Time to Peak Temperature
Time at 260C
Time at 240C
Ramp down
Symbol
ts
RUP
tL
t25C to peak
tP
tP2
RDN
Value
200 sec Max
150°C
200°C
3ºC/sec Max
150 sec Max
480 sec Max
30 sec Max
60 sec Max
6ºC/sec Max
Tape & Reel
Table 7. Tape and Reel Information
Tape Dimensions (mm)
Reel Dimensions (mm)
W F Do Po P1 A B C D N W1 W2 #/Reel
16 7.5 1.5
4
8
180 1.5
13 20.2 60 16.4 20.4
1000
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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