VECTRON VTC2 Technical data

VTC2 series

Voltage Controlled Temperature Compensated Crystal Oscillator

The VTC2, VCTXCO

Features

• CMOS Square Wave Output

• Enable Disable Feature

• Output Frequencies to 30 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

• FPGA’s

• A/D’s

• DSL Head End

• Wireless Communications

• Base Stations

• Point to point radios

• Broadband Access

• Test Equipment

Description

Vectron’s VTC2 Temperature Compensated
Crystal Oscillator (TCXO) is a quartz stabilized,
CMOS squarewave , 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: [e-mail]

VTC2 Data sheet

Performance Characteristics

Table 1. Electrical Performance

Parameter Symbol

Min Typical Maximum Units

Frequency fO 10.000 30.000 MHz
Supply Voltage 3.3V ±10% or +5V ±5% VDC
Maximum Supply Voltage 6 VDC

Supply Current , +3.3V IDD 10.0 mA
Output Level

Logic High
Logic Low
Drive High
Drive Low

2

VOH

V

OL

IOH

IOL

0.9*V

4

DD

0.1*V

-4

DD

V

V
mA
mA

Output Load 15pf
Duty Cycle, @ 50% 45/55 %
Control Voltage Impedance ZVc 100 Kohm
Control Voltage to reach pull 0.5 2.5 V
Pull Range

TPR ±5, ±8 ppm

Ordering option, see last page

Temperature Stability

±0.5 to ±5.0 ppm

Ordering option, see last page.
Initial Accuracy, “No Adjust” option ±1.0 ppm
Power Supply Stability ±0.3 ppm
Load Stability ±0.2 ppm
Aging ±1.0 ppm/year
Enable/Disable3

Output Active

Output Disabled
Operating temperature

0.8*VDD

V

0.2*VDD

0/55, -10/60, -20/70, -30/80, -40/85 °C

Ordering option, see last page
Phase Noise, 12.800MHz

10 Hz offset

100 Hz offset

1 kHz offset

10 kHz offset

100 kHz offset

-93

-123

-147

-155

-158

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.

3. Output is active if E/D is open.

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [e-mail]

VTC2 Data sheet

VCXO Functional Description

VCXO Feature : The VTC2 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 high impedance, 1 Mohm, input 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 VTC2 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 VTC2-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 or left open (but not set to a voltage such as the supply).

Outline Diagrams, Pad Layout and Pin Out

Table 2. Pinout

Pin # Function Pin # Function

1 No Connect (VTC2-x0xx)

or VCXO Control Voltage
2 Make No Connection 9 Enable/Disable
3 Make No Connection 8 Make No Connection
4 Make No Connection 7 Make No Connection

5 Electrical Ground 6 Output Frequency

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.

10 Supply Voltage

Contact Pads are gold over nickel

Figure 2, Package drawing

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [e-mail]

VTC2 Data sheet

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

VTC2

16 7.5 1.5 4 8 1.5 20.2 13 60 2 16.4 180

J

F

CD

A

E

G

B

I

L

KH

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 -55/125 °C

Reliability

The VTC2 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 Solve nts MIL-STD-883 Method 2015
Moisture Sensitivity Level 1
Contact Pads Gold over Nickel

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [e-mail]

VTC2 Data Sheet

Handling Precautions

Although ESD protection circuitry has been designed into the the VTC2, 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 1500 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-020B)

Parameter Symbol Value

PreHeat Time
Ramp Up

t S 150 sec Min, 200 sec Max

R

3 oC/sec Max

UP

Time Above 217 oC t L 60 sec Min, 150 sec Max
Time To Peak Temperature
Time At 260 oC (max)
Time At 240 °C (max)
Ramp Down

t

480 sec Max

AMB -P

t P 10 sec Max
tp2 60 sec Max

R

6 oC/sec Max

DN

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail [e-mail]

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VTC2 Data Sheet

Ordering Information

Table 8. Standard Frequency List

10.000 12.800 16.000 18.000 19.200 20.000 24.000 25.000

26.000 27.000

VTC2 - -

Product Family Output Frequency
TCXO, 5x7 In MHz
Voltage Options Temperature Options

H: +5.0 Vdc ±5%, CMOS Output A: 0 to 55°C
J: +3.3 Vdc ±10%, CMOS Output B: -10 to 60°C
C: -20 to 70°C
Pulling Range D: -30 to 80°C
0: Fixed TCXO, no adjust E: -40 to 85°C
1: ±5ppm
2: ±8ppm Stability Options
A: ±0.5ppm
1: ±1.0ppm
B: ±1.5ppm
2: ±2.0ppm
C: ±2.5ppm

J

0 C

2

10M000

3: ±3.0 ppm
Note: Not all combinations are available: D: ±3.5ppm

±0.5 ppm is available over 0 to 55 °C only 4: ±4.0ppm
±1.0 ppm to ±5.0 ppm is available on all temperature ranges 5: ±5.0ppm

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: [phone] • Fax: [phone]

www.vectron.com

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail [e-mail]

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: [phone] • Fax: [phone]

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For Additional Information, Please Contact:

March 26, 2007