VECTRON VCC6-Q, VCC6-R User Manual

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VCC6-Q/R Series

2.5 and 3.3 volt LVPECL Crystal Oscillator

Features

• 2.5 or 3.3V LVPECL

• 3rd Overtone Crystal for best jitter performance

• Output frequencies to 270 MHz

• Low Jitter < 1 pS rms, 12kHz to 20MHz

• Enable/Disable for test and board debug

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

The VCC6 Crystal Oscillator

Output
Buffer /

• Hermetically sealed ceramic SMD package

• Product is compliant to RoHS directive

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.

The VCC6 uses 3rd overtone crystals for
frequencies under 200MHz, resulting in low jitter
performance, typically 0. 3pS rms in the 12 kHz to
20MHz band.

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

VCC6-Q/R Series, 2.5 and 3.3v PECL Crystal Oscillator

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Performance Characteristics

Table 1. Electrical Performance

Parameter Symbol

Frequency fO 10 270 MHz
Supply Voltage1, 3.3V Q option

VDD 3.15

2.5V R option
Supply Current IDD 98 mA
Output Logic Levels, 0/70°C
Output Logic High2
Output Logic Low2

Output Logic Levels, -40/85°C
Output Logic High2
Output Logic Low2

Transition Times
Rise Time2
Fall Time2

VOH

VOL

VOH

VOL

tR

tF
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

Jitter, 12kHz to 20MHz5

Cycle to Cycle, rms
Cycle to Cy cle, peak-peak
Period Jitter, rms

Period Jitter, peak -peak
Output Enabled6 VIH 0.7*VDD V
Output Disabled6 VIL 0.3*VDD V
Output Enable/Disable time t

200 nS

E/D

Enable/Disable Leakage Current IIL ±200 uA
Output Enable Pull-Up Resistor6

Output Enabled

Output Disabled

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-155M520 using an Agilent E5052A for phase noise and LeCroy 8600, 25K samples for jitter.

6. Output will be enabled if Enable/Disable is left open. The pull resistor changes to a higher value, operating in a “power saving mode” when
Enable/Disable is set to a logic 0.

Min Typical Maximum Units

2.375

VDD-1.025
VDD-1.810

VDD-1.085
VDD-1.830

3.3

2.5

3.45

2.625

VDD-0.880
VDD-1.620

VDD-0.880
VDD-1.555

600
600

±25, ±50 or ±100 ppm

0.3

0.7 pS

4.8
38

2.7
23

33

1

V

V
V

V
V

ps
ps

Kohm

Mohm

R

%

80

Vs

20%

On Time

Period

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

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

VCC6-Q/R Series, 2.5 and 3.3v PECL Crystal Oscillator

Outline Diagram and Pin Out

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

Gold over Nickel plating

Figure 3 Optional VCC6-QAx Package Drawing

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

Gold over Nickel plating

Figure 4. VCC6-QCx and VCC6-QAx Package Drawing

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