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Vectron |
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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Specifications
Table 1. Electrical Performance, Clipped Sine Wave Option
Parameter
Symbol
Min.
Typ
Max
Units
Output Frequency1, Ordering Option
Supply Voltage3, Ordering Option
Supply Current
Operating Temperature, Ordering Option
fO 5
52
VDD +2.5, +2.8, +3.0, +3.3
IDD 3.5
TOP 0/55, -10/70, -20/70, -30/85, -40/85
Frequency Stability
MHz
V
mA
°C
Stability Over TOP4 , Ordering Option
Frequency Tolerance5
Power Supply Stability, ±5%
Load Stability, ±10%
Aging / 1st year
FSTAB ±0.5, ±1.0, ±1.5 , ±2.0, ±2.5, ±3.0, ±4.0, ±5.0
FTOL ±2.0
FPWR ±0.1
FLOAD
±0.2
FAGE ±1.0
Frequency Tuning (EFC), Ordering Option
ppm
ppm
ppm
ppm
ppm
Tuning Range6
PR
±5.0, ±8.0, ±10.0, ±12.0
ppm
Tuning Slope
Positive
Control Voltage to reach Pull Range
Control Voltage Impedance
VC 0.5 1.5 2.5
V
100 Kohm
RF Output (Clipped Sine Wave), Ordering Option
Output Level High
Output Load
Start Up Time
VO p-p
0.8
CL
tSU
Phase Noise7
10k || 10pF
2
V
ms
Phase Noise, 10.00MHz7
10Hz
0N
dBc/Hz
-96
100Hz
-122
1kHz
-140
10kHz
-148
100kHz
-153
1. Refer to Table 8 for Standard Frequencies. Other Frequencies are available on request. Check with factory.
2. Output DC-cut capacitor is optional.
3. The VT-704 power supply pin (Pin4) should be filtered using a by-pass capacitor of 0.1uF for optimal performance.
4. Referenced to the midpoint between minimum and maximum frequency value over Operating Temperature Range.
5. Frequency measured at 25 °C, 1 hour after 2 IR reflows.
6. Referenced to Mid Control Voltage
7. Measured at ambient temperature using Agilent E5052B Signal Source Analyzer.
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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