Product Data Sheet - Vectron International

VT-490
Temperature Compensated Crystal Oscillator
Previous Vectron Model OSC
VT-490
Description
Vectron’s VT-490 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, analog
temperature compensated oscillator, operating off either 3.0 or 5.0 volt supply built on a 9.9x11.8 FR4 board with a cover.
Features
Applications
• Clipped Sine Wave Output
• Output Frequencies to 40 MHz
• Fundamental Crystal Design
• Optional VCXO Function available
• Gold over nickel contact pads
• SMD package
• Wireless Communications
• Base Stations
• Point to point radios
• Broadband Access
• Test Equipment
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
Output
VDD
Crystal
Analog
Temperature
Comp.
Vcontrol or NC
Gnd
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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Performance Specifications
Table 1. Electrical Performance
Parameter
Output Frequency
Symbol
Min.
fO
10
Supply Voltage1
VDD
Supply Current, 8-16.800MHz
16.801-25.9999MHz
26.000-40.000MHz
IDD
Operating Temperature, (Ordering Option)
TOP
Typ
Max
Units
40
MHz
+3.0 or +5.0
V
2.0
3.0
4.0
Stability Over TOP, (Ordering Option)
mA
-20/70, -30/80, -40/85
°C
±1.5, ±2.0, ±2.5, ±5.0
ppm
Initial Accuracy, “No Adjust” Option
±1.0
ppm
Power Supply Stability, 10-16.800MHz
16.801-25.9999MHz
26.000-40.000MHz
±0.3
±0.5
±1.0
ppm
Load Stability
±0.5
ppm
±1
ppm/yr
Aging
Pull Range,
Mechanical Trim Only
Electrical and Mechanical Trim
Electrical Trim only
3
TPR
ppm
±8
±5
±8
Control Voltage to reach Pull Range, 5V
3.0V option
0.5
0.5
Control Voltage Impedance
100
Kohm
1.0
0.7
V
Output Level , 5V option
3.0V option
2,
VO p/p
4.5
2.5
Output Load
V
10K II 10pF
Phase Noise, 10.000MHz
10Hz
100Hz
1kHz
10kHz
100kHz
dBc/Hz
-100
-123
-133
-143
-151
Start Up Time
10
ms
1. The VT-490 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor
2. The Output is AC coupled
3. A special trim tool, KMTZ04, should be used to adjust the frequency
Outline Drawing
Recommended Pad Layout
1.9
1.4
7.62
8.4
Table 2. Pinout
Pin #
Symbol
Function
1
VC
TCXO Control Voltage or Ground
2
GND
Electrical and Lid Ground
3
fo
Output Frequency
4
VDD
Supply Voltage
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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VCXO Function
S
VCXO Feature: The VT-490 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 , 1Mohm, and can be driven with an op-amp
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-490 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-490-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.
Phase Noise
Output Waveform
-
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-490, 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 3. Maximum Ratings
Parameter
Symbol
Rating
Unit
Storage Temperature
TSTORE
-55/125
ºC
Supply Voltage
VDD
6
V
Control Voltage
VC
0/VDD
V
ESD, Human Body Model
1500
V
ESD, Charged Device Model
1000
V
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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Table 4. Environmental Compliance
Parameter
Condition
Mechanical Shock
MIL-STD-883 Method 2002
Mechanical Vibration
MIL-STD-883 Method 2007
Temperature Cycle
MIL-STD-883 Method 1010
Solderability
MIL-STD-883 Method 2003
Fine and Gross Leak
MIL-STD-883 Method 1014
Resistance to Solvents
MIL-STD-883 Method 2015
Moisture Sensitivity Level
MSL1
Contact Pads
Gold over Nickel
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 5. Reflow Profile
Parameter
Symbol
Value
PreHeat Time
Ts-min
Ts-max
ts
200 sec Max
150°C
200°C
Ramp Up
RUP
3ºC/sec Max
Time above 217C
tL
150 sec Max
Time to Peak Temperature
t25C to peak
480 sec Max
Time at 260C
tP
10 sec Max
Time at 240C
tP2
60 sec Max
Ramp down
RDN
6ºC/sec Max
Tape and Reel Information
Table 6. 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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Table 7. Standard Frequencies (MHz)
10.000
10.245 12.504
12.800
13.000
13.568 14.000
14.31818 14.4844
14.7456
15.000
16.000 16.325291
16.36625
16.367667
16.3683 16.396
16.800 17.500
18.414 19.200
19.440
19.6608
19.680
19.800
20.000 20.910
21.250
23.104
24.000
24.5454
24.5535
24.576
25.000
25.600
26.000
27.000
27.456
28.800
32.768
40.000
Ordering Information
VT- 490- F F J - 206 A- xxMxxxxxxx
Frequency in MHz
Product
TCXO
Tuning
0: Fixed, Mechanical tuning only
A: ±5ppm Mechanical and Electrical
B: ±8ppm Electrical tuning only
Package
9.9x11.8, FR4, trim
Voltage Options
D: +5.0 Vdc ±5%,
F: +3.0 Vdc ±5%
Stability
156: ±1.5ppm
206: ±2.0ppm
256: ±2.5ppm
506: ±5.0ppm
Output
F: Clipped Sine Wave
Temp Range
J: -20/70°C
G: -30/80°C
E: -40/85°C
*Note: not all combination of options are available.
Other specifications may be available upon request.
Example: VT-490-FFJ-206A-19M2000000
USA:
Vectron International
267 Lowell Road, Suite 102
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
68 Yin Cheng Road (C), 22nd Floor
One LuJiaZui
Pudong, Shanghai 200120, China
Tel: 86.21.6194.6886
Fax: 86.21.6194.6699
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: 02/11/2014
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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