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VT-820
Temperature Compensated Crystal Oscillator Previous Vectron Model VTM3
VT-820
Description
Vectron's VT-820 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, analog temperature compensated oscillator, operating off either 2.8, 3.0 or 3.3 volt supply, hermetically sealed 3.2x2.5 ceramic package.
Features
* * * * * * 0.5pmm Temperature Stability Clipped Sine Wave Output Output Frequencies to 45 MHz Fundamental Crystal Design Optional VCXO Function available Hermetically Sealed Ceramic SMD package * * * * * * * * *
Applications
GPS WiMAX, Wi-Fi,Wi-LAN Seismic Exploration Wireless Communications Base Stations Point to point radios Broadband Access Test Equipment Handsets
* Product is compliant to RoHS directive and fully compatible with lead free assembly
Block Diagram
VDD Crystal Output
Analog Temperature Comp.
Vcontrol or NC
Gnd
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Performance Specifications Specifications
Table 1. Electrical Performance Parameter
Output Frequency Supply Voltage, (Ordering Option) Supply Current, 8 to 19.999MHz 20.000 to 31.9999MHz 32.000 to 45.000MHz Operating Temperature, (Ordering Option) Stability Over TOP,, (Ordering Option) Initial Accuracy, "No Adjust" Option Power Supply Stability Load Stability Aging Pull Range, (Ordering Option) Control Voltage to reach Pull Range Control Voltage Impedance Output Level2 Output Load Phase Noise, 10.000MHz 10Hz 100Hz 1kHz 10kHz 100kHz Start Up Time 1. The VTM3 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor 2. The Output is DC coupled -91 -116 -137 -149 -150 10 ms VO p/p TPR 0.5 500 0.8 10K II 10pF dBc/Hz 5, 8, 10, 12, 15 2.5
1
Symbol
fO VDD IDD
Min.
8
Typ
+2.8, +3.0 or +3.3
Max
45 1.5 2.0 2.5
Units
MHz V mA
TOP
0/55, -10/60, -20/70, -30/80, -30/85, -40/85 0.5, 1.0, .5, 2.0, 2.5, 3.0, 4.0, 5.0 1.0 0.2 0.2 1.0
C ppm ppm ppm ppm ppm/yr ppm V Kohm V
Outline Drawing
3.20.1 Dimensions in mm Description
Recommended Pad Layout
1.320.1 1.00.1
2.50.1
Frequency Date Code
1.020.1
0.450.1 0.80.1 1.600.1 1.270.1
1 2 3
0.90.1 0.080.1
Table 2. Pinout Pin #
1 2,5,7,8 3 4 6
Symbol
VC TCXOPROG GND fo VDD
Function
TCXO Control Voltage or Ground TCXO Programming, DO NOT CONNECT Electrical and Lid Ground Output Frequency Supply Voltage
7
8
1.30.1
6
5
4
0.60.1
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Outline Drawing
3.20.2
4 3
Recommended Pad Layout
1.00.1
2.50.2
Frequency Date Code
1.65 1.25
1
2
2.60 1.0 max
1
2
0.65
Package drawing for the 0.5ppm over -30/80C and <2ppm over -40/85C stability options
Table 3. Pinout Pin #
0.85
4 3
Symbol
VC GND fo VDD
Function
TCXO Control Voltage or Ground Electrical and Lid Ground Output Frequency Supply Voltage
1 2 0.550.1 1.95 3 4
VCXO Function
S
VCXO Feature: The VT-820 can be ordered 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 , 500KMohm, and can be driven with an opamp or terminated with adjustable resistors etc. Pin 1 should not be left floating on the VCXO optional device.
"No Adjust" Option: In applications were the VT-820 will not be used in a PLL , or the output frequency does not need fine tune adjustments, the best device to use would be a VT-820-xxx-xxx0. By using the "no adjust" option, the circuit is simplified as Vc does not need to be adjusted or set to a predetermined voltage and pin 1 should be grounded (pin 1 can be left open but should not be set to a voltage such as an RF signal or power supply voltage.
Maximum Ratings
S
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-820, 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 ESD, Human Body Model ESD, Charged Device Model
Symbol
TSTORE VDD VC
Rating
-40/85 6 0/VDD 1000 1000
Unit
C V V V V
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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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
The
Reliability IR Reflow
S
Suggested IR Profile Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 5. Contact pads are gold over nickel and lower maximum temperatures can also be used, such as 220C.
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
Symbol
ts
Value
200 sec Max 150C 200C 3C/sec Max 150 sec Max 480 sec Max 10 sec Max 60 sec Max
RUP tL t25C to peak tP tP2
Tape & Reel
Table 7. Tape and Reel Information Tape Dimensions (mm)
W 18 F 1.75 Do 1.55 Po 4 P1 4 A 178 B 2.5
Reel Dimensions (mm)
C 13 D 22 N 60 W1 11.5 W2 15 #/Reel 1000
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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Table 8. Standard Frequencies (MHz)
8.1920 15.000 19.200 25.000 39.000 10.000 16.000 19.392658 26.000 40.000 10.250 16.3670 19.440 27.000 41.4720 12.000 16.366667 19.6608 27.4560 45.000 12.800 16.367667 19.680 30.150 13.000 16.367673 20.000 30.400 13.568 16.368 20.7360 30.720 14.000 16.369 22.000 31.7967590 14.7456 16.736 23.104 37.800 15.360 16.800 24.5535 38.400
Ordering Information
VT-820- E F G - 206 A- xxMxxxxxxx
Frequency in MHz Product TCXO Package 2.5x3.2 Voltage Options, E: +3.3 Vdc 5%, F: +3.0 Vdc 5% G: +2.8 Vdc 5% Output F: Clipped Sine Wave Temp Range R: 0 /55C K: -10/60C J: -20/70C G: -30/80C H: -30/85C E: -40/85C Tuning 0: Fixed, No tuning A: 5ppm B: 8ppm C: 10ppm D: 12ppm E: 15ppm Stability 507: 0.5ppm 106: 1ppm 156: 1.5ppm 206: 2.0ppm 256: 2.5ppm 306: 3.0ppm 356: 3.5ppm 406: 4.0ppm 506: 5.0ppm
*Note: not all combination of options are available. Other specifications may be available upon request.
Example: VT-820-EFG-206A-19M200000
For Additional Information, Please Contact
USA:
Vectron International 267 Lowell Road Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328
Europe:
Vectron International Landstrasse, D-74924 Neckarbischofsheim, Germany Tel: +49 (0) 3328.4784.17 Fax: +49 (0) 3328.4784.30
Asia:
Vectron International 1F-2F, No 8 Workshop, No 308 Fenju Road WaiGaoQiao Free Trade Zone Pudong, Shanghai, China 200131 Tel: 86.21.5048.0777 Fax: 86.21.5048.1881
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Rev: 12/07/2008
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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