VCC6-QCA-350M00 - Vectron International

Vectron International 267 Lowell Road, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

VCC6-Q Series

3.3 volt LVPECL Crystal Oscillator, Output Frequencies > 270MHz

The VCC6 Crystal Oscillator

Features

• 3.3V LVPECL

• Output frequencies from 270 to 800 MHz

• Enable/Disable for test and board debug

• -10/70 or –40/85 °C operating temperature

• Hermetically sealed ceramic SMD package

• Product is compliant to RoHS directive

and fully compatible with lead free assembly

Applications

• SONET/SDH/DWDM

• Fiber Channel

• Ethernet, Gigabit Ethernet

• Storage Area Network

• Digital Video

• Broadband Access

Description

Vectron’s VCC6 Crystal Oscillator (XO) is quartz

stabilized square wave generator with a LV-PECL

output, operating off a 3.3 volt supply.

OUT

Output

Buffer /

Disable

Enable/Disable

OUT

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

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 270 800 MHz

Supply Voltage 1 , VDD 3.15 3.45 V

Supply Current IDD 100 mA

Output Logic Levels, -10/70°C

Output Logic High2

Output Logic Low2

VOH

VOL

VDD-1.025

VDD-1.810

VDD-0.880

VDD-1.620

Output Logic Levels, -40/85°C

Output Logic High2

Output Logic Low2

VOH

VOL

VDD-1.085

VDD-1.830

VDD-0.880

VDD-1.555

Transition Times

Rise Time2

Fall Time2

600

Symmetry or Duty Cycle3 SYM 45 50 55 %

Operating temperature (ordering option) TOP -10/70 or –40/85 °C

Stability (ordering option)4 deltaF/F

±20, ±25, ±50 or ±100 ppm

Jitter, 12kHz to 20MHz5

Period RMS Jitter

Period p/p Jitter

Output Enabled6 VIH 0.7*VDD V

Output Disabled6 VIL 0.3*VDD V

Enable/Disable Leakage Current IIL ±200 uA

Output Enable Pull-Up Resistor6 100

1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible and terminated to ground.

2. Figure 1 defines these parameters. Figure 2 illustrates the operating conditions under which these parameters are tested and specified.

3. Symmetry is measured defined as On Time/Period.

4. Includes calibration tolerance, operating temperature, supply voltage variations, aging (40 degreesC/10 years) and shock and vibration (not under

operation).

5. Measurements made on a VCC6-QAB-622M080 using a LeCroy 8600, 25K samples.

6. Output will be enabled if Enable/Disable is left open.

Figure 1. Output Waveform Figure 2. Typical Output Test Conditions (25±5°C)

80%

20%

Period

On Time

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

Table 2. VCC6-QAx Pinout

Pin # Symbol Function

1 NC This pin has no internal connection and is floating.

2 E/D Enable/Disable Function

3 GND Ground

4 fO Output Frequency

5 Cfo Complementary Output Frequency

6 VDD Supply Voltage

Table 3. VCC6-QCx Pinout

Pin # Symbol Function

1 E/D Enable/Disable Function

2 NC This pin has no internal connection and is floating.

3 GND Ground

4 fO Output Frequency

5 Cfo Complementary Output Frequency

6 VDD Supply Voltage

Contact pads are Gold over Nickel plating

Figure 3. VCC6-QCx Package Drawing

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

Terminating PECL Outputs

The VCC6 incorporates a standard PECL output scheme, which are un-terminated emitters as shown in

Figure 4. There are numerous application notes on terminating and interfacing PECL logic and the two most

common methods are a single resistor to ground, Figure 5, and a pull-up/pull-down scheme as shown in

Figure 6. An AC coupling capacitor is optional, depending on the application and the input logic

requirements of the next stage.

One of the most important considerations is terminating the Output and Complementary Outputs equally.

An unused output should not be left un-terminated, and if it one of the two outputs is left open it will result in

excessive jitter on both. PC board layout must take this and 50 ohm impedance matching into account.

Load matching and power supply noise are the main contributors to jitter related problems.

Figure 4. Standard PECL Output Configuration

Figure 5. Single Resistor Termination Figure 6. Pull-up Pull-down Termination

Resistor value are typically: Resistor values are typically:

120 to 240ohms for 3.3V 130 and 82 ohms for 3.3V

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

Enable/Disable Functional Description

Under normal operation the Enable/Disable is left open, or set to a logic high state, and the VCC6 is

oscillating. When the E/D is set to a logic low, the oscillator stops and the both the output and

complementary outputs are in a high impedance state. This helps facilitate board testing and

troubleshooting.

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

Power Supply VDD -0.5 to +4.6 Vdc

Enable/Disable VIN -0.5 to VDD+0.5 Vdc

Storage Temperature Tstorage -55/125 °C

Reliability

The VCC6 qualification tests included:

Table 5. Environnemental Compliance

Parameter Conditions

Mechanical Shock MIL-STD-883 Method 2002

Mechanical Vibration MIL-STD-883 Method 2007

Solderability MIL-STD-883 Method 2003

Gross and Fine Leak MIL-STD-883 Method 1014

Resistance to Solvents MIL-STD-883 Method 2016

Handling Precautions

Although ESD protection circuitry has been designed into the the VCC6, 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 3015

Charged Device Model 1500

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

IR Reflow and Suggested Pad Size Layout

The VCC6 has been qualified to meet the JEDEC standard for Pb-Free assembly. The temperatures and

time intervals listed are based on the Pb-Free small body requirements and parameters are listed in Table 7.

The VCC6 is hermetically sealed so an aqueous wash is not an issue.

Table 7. Reflow Profile (IPC/JEDEC J-STD-020B)

Parameter Symbol Value

PreHeat Time t S 60 sec Min, 200 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

Ramp Down R DN 6 oC/sec Max

Figure 7. IR Reflow Diagram

Figure 8. Pad Size Diagram

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

GFJ

Tape and Reel

Figure 9. Tape and Reel Diagram

Table 8. Tape and Reel Dimensions (mm)

Tape Dimensions Reel Dimensions # Per

Product A B C D E F G H I J K L Reel

VCC6 16 7.5 1.5 4 8 2 21 13 60 2 17 180 250

VCC6-Q 3.3v LVPECL Crystal Oscillator, Output Frequencies > 270MHZ

Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: vectron@vectron.com

Table 9. Frequencies (MHz)

311.040 312.500 320.000 322.2656 332.000

333.000 350.000 400.000 446.000 472.000

500.000 600.000 622.080 625.000 644.5313

666.5413 669.3236 693.3265 693.4829 693.750

700.000 779.5686

Other frequencies may be available upon request. Standard frequencies are frequencies which the crystal

has been designed and does not imply a stock position.

Ordering Information

VCC6 – Qxx – xxxMxx

Product Family Frequency MHz

Crystal Oscillator example: 625M00= 625.000MHz

Supply Voltage, Output Stability Options/Temperature

Q=3.3V, PECL A: ±100ppm -10 to 70°C

B: ±50ppm -10 to 70°C

Enable/Disable C: ±100ppm -40 to 85°C

A: E/D is on Pin 2, Pin 1 is a NC D: ±50ppm -40 to 85°C

C: E/D is on Pin 1, Pin 2 is a NC E: ±25ppm -10 to 70°C

F: ±25ppm -40 to 85°C

NOTE: Not all combinations of options are available.

A +/-20ppm over -10/70°C, VCC6-107-frequency, is also available.

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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.

VCC6-Q 270Mhz (REVISION DATE: September7, 2005)

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