VECTRON VVC1, VVC2 Technical data

Buffer

ESD Diodes

The VVC1 Voltage Controlled Crystal Oscillator

Vc

Input

Output
Buffer /
Tri-state

VVC1/VVC2

Voltage Controlled Crystal Oscillator

Features

• VCXO with a CMOS output

• Small 5.0 X 7.0 X 1. 8 mm package

• Output frequencies to 66 MHz

• 5.0 or 3.3 V operation

• Low Jitter < 6 pS rms, fo>12MHz

• Tri-State Output for test and board debug

• 0/70 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

• Ethernet, Gigabit Ethernet

• xDSL/PCMCIA cards

• Digital Video

• Broadband Access

Description

fO

Vectron’s VVC1 Voltage Controlled Crystal
Oscillator (VCXO) is a quartz stabilized square
wave generator with a CMOS output and is tested
at CMOS and TTL (5.0 volt operation) logic levels.

The VVC1 uses fundamental crystals resulting in
low jitter performance and a monolithic IC which
improves reliability and reduces cost.

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

VVC1 Voltage Controlled Crystal Oscillator

tFt

-

4

3

256

1

1.8k

Performance Characteristics

Table 1. Electrical Performance

Parameter Symbol

Frequency fO 1.544 65.536 MHz
Supply Voltage 1 (+ 5.0 V)

(+3.3 V)

Supply Current (+5.0 V)
(+3.3 V)
Output Logic Levels
Output Logic High2
Output Logic Low2
Transition Times
Rise Time2
Fall Time2

V

DD

I

DD

VOH

VOL

tR

tF
Symmetry or Duty Cycle3 SYM 45 50 55 %
Operating temperature (ordering option) 0/70 or –40/85 °C
Total Pull Range (ordering option)

±50, ±100 or ±150

Or

Absolute Pull Range
Test Conditions for APR (+5V option) VC 0.5 4.5 V
Test Conditions for APR (+3.3V option) VC 0.3 3.0 V
Gain Transfer (See Figure 3) Positive ppm/V
Control Voltage Leakage Current I

±1 uA

VCXO

Control Voltage Bandwidth (-3dB) BW 10 kHz
Package Size 5.0 x 7.0 x 1. 8 mm

1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.

2. Figure 1 defines these parameters. Figure 2 illustrates the equivalent five gate TTL load and operating conditions under which
these parameters are tested and specified.

3. Symmetry is defined as (ON TIME/PERIOD with Vs= 1.4 V for TTL and Vs=2.5 V for CMOS, 5 volt operation, and Vs=1.65V
for 3.3 Volt operation.

Min Typical Maximum Units

4.750

3.135

5.0

3.3

5.250

3.465

55

40

0.9*VDD

0.1VDD

5
5

±50, ±80 or ±100

V

mA

V
V

ns
ns

ppm

R

%

80

Vs

20%

On Time

Period

I

DD

+

µ

.1

-

F .01µF

I

C

+

V

C

V

DD

650Ω

15pF

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]