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PDF VT-704 Data sheet ( Hoja de datos )
| Número de pieza | VT-704 | |
| Descripción | Temperature Compensated Crystal Oscillator | |
| Fabricantes | Vectron | |
| Logotipo |  |
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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
Page1
1 page  
Package Outline Drawing & Pad Layout
XXMXXX
YYWW T
Dimensions in mm
Marking Information
XXMXX - Frequency (Example: 10M000)
YY - Year of Manufacture
WW - Week of the Year
T - Manufacturing Location
- Pin 1 Indicator
Table 3. Pinout
Pin # Symbol
1 Vc or NC
2 GND
3 OUT
4 VDD
Function
TCXO Control Voltage or No Connect
Ground
RF Output
Supply Voltage
Note:
0.1uF capacitor is a by-pass power supply filter capacitor
placed between Pin4 (Vdd) and Ground for optimal
performance.
VCXO Function
VCXO Feature: The VT-704 is supplied with a VCXO function for applications were it will be used in a PLL, or the output frequency needs
fine tune or calibration adjustments. This is a high impedance input, 100kOhm, and can be driven with an op-amp or terminated with
adjustable resistors etc. Pin1 should not be left floating on the VCXO optional device.
Maximum Ratings
Absolute Maximum Ratings and Handling Precautions
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied or any other
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.
Although ESD protection circuitry has been designed into the VT-704, proper precautions should be taken when handling and mounting,
VI employs a Human Body Model and Charged Device Model for ESD susceptibility testing and design evaluation.
ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry standard has been adopted for
the CDM a standard resistance of 1.5kOhms and capacitance of 100pF is widely used and therefor can be used for comparison purposes.
Table 4. Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Control Voltage
Enable/Disable Voltage
ESD, Human Body Model
ESD, Charged Device Model
Symbol
TSTORE
VDD
VC
E/D
Rating
-55/125
-0.6/6
-0.6/VDD+0.6
-0.6/VDD+0.6
1500
1000
Unit
ºC
V
V
V
V
V
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet VT-704.PDF ] | |
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