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VTC4 series
Voltage Controlled Temperature Compensated Crystal Oscillator
Features
* Clipped Sine Wave Output * Output Frequencies to 27 MHz * Fundamental Crystal Design * Optional VCXO Function available * Gold over nickel contact pads
* Hermetically Sealed Ceramic SMD package
The VTC4, VCTXCO
* Product is compliant to RoHS directive and fully compatible with lead free assembly
Applications
* Wireless Communications * Base Stations
* Point to point radios * Broadband Access * Test Equipment * Handsets
Description
Vectron's VTC4 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, temperature compensated oscillator, operating off either 2.8, 3.0, 3.3 or 5.0 volt supply.
Vectron International 267 Lowell Road, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTC4 Data Sheet
Performance Characteristics
Table 1. Electrical Performance for the Clipped Sine Wave Output Option Parameter Symbol Min Typical Maximum Frequency fO 10.000 27.000 Typical Supply Voltage 2.8V, 3.0V, 3.3V or 5.0V Ordering option, see last page Supply Current IDD 10.000 MHz to < 15.000 MHz 1.5 15.000 MHz to 27.00 MHz 2.0 Output Level Vp/p 0.8 Output Load 10K II 10pf Control Voltage Impedance ZVc 1 Control Voltage to reach pull All options (5.0, 3.3,3.0 and 2.8V) 0.5 2.5 Pull Range TPR 5, 8, 10, 15 or 20 Ordering option, see last page Temperature Stability 0.5 to 5.0 Ordering option, see last page. Initial Accuracy, "No Adjust" option 0.5 Power Supply Stability 0.2 Load Stability 0.2 Aging 1.0 Operating temperature 0/55, -10/60, -20/70, -30/80, -40/85 Ordering option, see last page Phase Noise, 12.800MHz 10 Hz offset -89 100 Hz offset -113 1 kHz offset -137 10 kHz offset -150 100 kHz offset -155 5MHz offset -156 Start-up time 2 Units MHz
mA
V Mohm V ppm ppm ppm ppm ppm ppm/year C dBc/Hz
ms
1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTC4 Data Sheet
Figure 1. Typical Phase Noise Plot
Figure 2. Clipped Sine Wave Output
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTC4 Data Sheet
VCXO Functional Description
VCXO Feature: The VTC4 can be ordered with a VCXO function for applications were it will be used in a PLL, or the output frequency needs fine tune adjustments. This is a high impedance input, 1 Mohm, 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 devices. "No Adjust" Feature: In applications were the VTC4 will be not be used in a PLL, or the output frequency does not fine tune adjustments, the best device to use would be a VTC4-x0xxx. By using the "no adjust" option, the circuit is simplified as Vc does not need to 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 the supply).
Outline Diagrams, Pad Layout and Pin Out
Table 2. Pinout Pin # Symbol 1 N/C or VC 2 GND 3 fO 4 VDD Function No Connect (VTC4-x0xx) or VCXO Control Voltage Electrical and Case Ground Output Frequency Supply Voltage
NOTE: Additional pads are used to program and adjust the TCXO during manufacturing and should be left open; do not terminate these to the supply voltage. Some designs do not include these additional pads.
Contact Pads are gold over nickel Figure 3, Package drawing
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTC4 Data Sheet
Tape and Reel
Table 3. Tape and Reel Dimensions (mm)
J F D A E C G B L I
H
K
Tape Dimensions Product A
VTC4
16
B
7.5
C
1.5
D
4
E
8
Reel Dimensions F G H
1.5 20.2 13
I
60
J
2
K
16.4
L
180
# Per Reel
1000
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied at these or any other conditions in 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. Table 4. Absolute Maximum Ratings Parameter Symbol Storage Temperature Tstorage Ratings -55/125 Unit C
Reliability
The VTC4 qualification tests have included: Table 5. Environnemental Compliance Parameter Mechanical Shock Mechanical Vibration Temperature Cycle Solderability Gross and Fine Leak Resistance to Solvents
Conditions 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
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTC4 Data Sheet
Handling Precautions
Although ESD protection circuitry has been designed into the the VTC4, proper precautions should be taken when handling and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for ESD susceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry wide standard has been adopted for the CDM, a standard HBM of resistance = 1.5kohms and capacitance = 100pF is widely used and therefore can be used for comparison purposes.
Table 6. ESD Ratings Model Human Body Model Charged Device Model
Minimum 1000 1500
Conditions MIL-STD-883 Method 3115 JESD 22-C101
Suggested IR profile
Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow conditions, Table 7 shows max temperatures and lower temperatures can also be used e.g. peak temperature of 220C. Table 7. Reflow Profile (IPC/JEDEC J-STD-020B) Parameter Symbol PreHeat Time tS Ramp Up R UP Time Above 217 C Time To Peak Temperature Time At 260 oC (max) Time At 240 C (max) Ramp Down
o
Value 150 sec Min, 200 sec Max 3 oC/sec Max 60 sec Min, 150 sec Max 480 sec Max 10 sec Max 60 sec Max 6 oC/sec Max
tL t AMB-P tP tp2 R DN
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
6
e-mail vectron@vectron.com
VTC4 Data Sheet
Ordering Information
Table 8. Standard Frequency List 10.000 12.504 12.800 14.7456 15.000 16.000 18.414 19.200 19.440 24.000 24.5535 25.000 13.000 16.325291 19.680 25.600 13.568 16.367667 19.800 27.456 14.000 16.396 20.000 14.31818 16.800 21.250 14.4844 17.500 23.104
VTC4 Product Family TCXO, 5x3.2 Voltage Options
B
0
2
C
-
12M800
Output Frequency In MHz Temperature Options A: 0 to 55C B: -10 to 60C C: -20 to 70C D: -30 to 80C E: -40 to 85C
B
B
A: +5.0 Vdc 5%, Clipped Sine Output B: +3.3 Vdc 5%, Clipped Sine Output C: +3.0 Vdc 5%, Clipped Sine Output D: +2.8 Vdc 5%, Clipped Sine Output
Pulling Range 0: Fixed TCXO, no adjust 1: 5ppm 2: 8ppm 3: 10ppm 4: 15ppm 5: 20ppm Stability Options A: 0.5ppm 1: 1.0ppm B: 1.5ppm 2: 2.0ppm C: 2.5ppm 3: 3.0 ppm Note: Not all combinations are available: D: 3.5ppm
0.5 ppm is available over 0 / 55 C, and on a case by case basis for -10/60C. 4: 4.0ppm 1.0 ppm to 5.0 ppm is available on all temperature ranges 5: 5.0ppm
www.vectron.com
USA: Vectron International * 267 Lowell Road, Hudson, NH 03051 For Additional Information, Please Contact: * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON EUROPE: Landstrasse, D-74924, Neckarbischofsheim, Germany * Tel: 49 (0) 7268 8010 * Fax: 49 (0) 7268 801281 ASIA: Vectron Asia Pacific Sales 1F~2F. No.8 Workshop No.308 Fenju Rd., WaiGaoQiao Free Trade Zone, Pudong New Area Shanghai, China 200131 *Tel: 8621 50480777 * Fax: 8621 50481881
December 29, 2005
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
7
e-mail vectron@vectron.com

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