Vectron International 267 Lowell Road, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
VTM3 series
Voltage Controlled Temperature Compensated Crystal Oscillator
The VTM3, VCTXCO
Features
• Small 3.2x2.5 package size
• Clipped Sine Wave Output
• Output Frequencies to 45 MHz
• Fundamental Crystal Design
• Optional VCXO Function available
• Gold over nickel contact pads
• Hermetically Sealed Ceramic SMD package
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Applications
• GPS
• WiMAX, Wi-Fi, Wi-LAN
• Seismic Exploration
• Point to point radios
• Broadband Access
• Test Equipment
• PDA’s
Description
Vectron’s VTM3 Temperature Compensated
Crystal Oscillator (TCXO) is a quartz stabilized,
clipped sine wave output, temperature
compensated oscillator, operating off either 2.8,
3.0, or 3.3 volt supply.
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
Performance Characteristics
Table 1. Electrical Performance
Parameter Symbol Min Typical Maximum Units
Frequency fO 8.000 45.000 MHz
Typical Supply Voltage1
Ordering option, see last page 2.8, 3.0, or 3.3 Vdc
Supply Current
8.000 MHz to < 20.000 MHz
20.000 MHz to < 32.00 MHz
32.000 MHz to 45.00 MHz
IDD
1.5
2.0
2.5
mA
Output Level2 Vp/p 0.8 V
Output Load 10K II 10p
f
Control Voltage Impedance ZVc 500 Kohm
Control Voltage to reach pull
All options (3.3,3.0 and 2.8V)
0.5
2.5 V
Pull Range
Ordering option, see last page TPR ±5, ±8, ±10, ±15 ppm
Temperature Stability
Ordering option, see last page. ±0.5 to ±5.0 ppm
Initial Accuracy, “No Adjust” option ±0.5 ±1.0 ppm
Power Supply Stability ±0.2 ppm
Load Stability ±0.2 ppm
Aging ±1.0 ppm/year
Operating temperature
Ordering option, see last page 0/55, -10/60, -20/70, -30/80, -40/85 °C
Phase Noise, 12.000MHz
10 Hz offset
100 Hz offset
1 kHz offset
10 kHz offset
100 kHz offset
1 MHz offset
5 MHz offset
-89
-117
-135
-148
-153
-154
-155
dBc/Hz
Start-up time 2 ms
1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.
2. Output is DC coupled.
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
Figure 2. Clipped Sine Wave Output
VCXO Functional Description
VCXO Feature: The VTM3 can be ordered with a VCXO function for applications where it will be used in
a PLL, or the output frequency needs fine tune adjustments. This is a high impedance input, 0.5 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 where the VTM3 will not be used in a PLL, or the output frequency
does not fine tune adjustments, the best device to use would be a VTM3-x0xx. 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).
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
Outline Diagrams, Pad Layout and Pin Out
Contact Pads are gold over nickel
Devices will be marked with the frequency
Pin 2,5,6,7,8 are used to program and adjust the TCXO during manufacturing and should be left open; do
not terminate these to the supply voltage and are a “make no connection” pad.
Figure 3, Package drawing
Pin 1, Ground or VC
Pin 2, NC
Pin 3, Ground
Pin 4, Output
Pin 5, NC
Pin 6, VCC
Pin 7, NC
Pin 8, NC
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
Contact Pads are gold over nickel
Devices will be marked with the frequency
Figure 4, Package drawing for ±0.5ppm over -30/80°C and <±2ppm over -40/85°C
MARKING
TERMINAL CONNECTION
TCXO VCTCXO
#1 GND Vcont
#2 GND GND
#3 OUTPUT OUTPUT
#4 Vcc Vcc
LAND PATTERN
3.2
±
0.2
1.95 0.55
1.0
2.5
±
0.2
1.0
max
0.650.85
1.25
#1 #2
#3
#4
2.6
1.65
Pin 1, Ground or VC
Pin 2, Ground
Pin 3, Output
Pin 4, VCC
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com
A
E
C
D
B
GFJ
LI
KH
Tape and Reel
Table 3. Tape and Reel Dimensions (mm)
Tape Dimensions Reel Dimensions # Per
Product A B C D E F G H I J K L Reel
VTM3 8 1.75 1.55 4 4 2.5 22 13 60 1.75 11.5 178
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 Ratings Unit
Storage Temperature Tstorage -40/85 °C
Reliability
The VTM3 qualification tests have included:
Table 5. Environnemental Compliance
Parameter Conditions
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
Gross and Fine Leak MIL-STD-883 Method 1014
Resistance to Solvents MIL-STD-883 Method 2015
Moisture Sensitivity Level 1
Contact Pads Gold over Nickel
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail vectron@vectron.com
7
Handling Precautions
Although ESD protection circuitry has been designed into the the VTM3, 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 Minimum Conditions
Human Body Model 1000 MIL-STD-883 Method 3115
Charged Device Model 1000 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-020)
Parameter Symbol Value
PreHeat Time t S 60 sec Min, 180 sec Max
Ramp Up R UP 3
oC/sec Max
Time Above 217 oC t L 60 sec Min, 150 sec Max
Time To Peak Temperature t AMB-P 480 sec Max
Time At 260 oC (max) t P 10 sec Max
Time At 240 °C (max) tp2 60 sec Max
Ramp Down R DN 6
oC/sec Max
VTM3 Data Sheet
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail vectron@vectron.com
8
Ordering Information
Table 8. Standard Frequency List
10.000 12.000 12.800 13.000 13.568 14.000 14.7456 16.000
16.367 16.367667 16.367673 16.368 16.369 16.376 16.800 19.200
19.440 19.6608 19.680 20.000 23.104 24.5535 25.000 26.000
27.456 32.000 39.000
VTM3 - -
Product Family Output Frequency
TCXO, 3.2 x 2.5 In MHz
Voltage Options Temperature Options
B: +3.3 Vdc ±5%, Clipped Sine Output A: 0 to 55°C
C: +3.0 Vdc ±5%, Clipped Sine Output B: -10 to 60°C
D: +2.8 Vdc ±5%, Clipped Sine Output C: -20 to 70°C
D: -30 to 80°C
E: -40 to 85°C
Pulling Range
0: Fixed TCXO, no adjust Stability Options
1: ±5ppm A: ±0.5ppm
2: ±8ppm 1: ±1.0ppm
3: ±10ppm B: ±1.5ppm
4: ±15ppm 2: ±2.0ppm
C: ±2.5ppm
3: ±3.0ppm
Note: Not all combinations are available D: ±3.5ppm
4: ±4.0ppm
5: ±5.0ppm
www.vectron.com
Revision Date Date Description
1.0 02/15/08 Initial Release
For Additional Information, Please Contact:
USA: Vectron International • 267 Lowell Road, Hudson, NH 03051
• 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
B0 C 12M800
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