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PDF VCC4 Data sheet ( Hoja de datos )

Número de pieza VCC4
Descripción CMOS Oscillator
Fabricantes Vectron International 
Logotipo Vectron International Logotipo



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The VCC4 Crystal Oscillator
Output
Buffer /
Disable
VCC4 series
1.8, 2.5, 3.3, 5.0 volt CMOS Oscillator
Features
CMOS output
Output frequencies to 125 MHz
Low jitter, Fundamental or 3rd OT Crystal
Tristate output for board test and debug
-10/70 or –40/85 °C operating temperature
Gold over nickel contact pads
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
Storage Area Network
Digital Video
Broadband Access
Microprocessors/DSP/FPGA
fo
Description
Vectron’s VCC4 Crystal Oscillator (XO) is quartz
stabilized square wave generator with a CMOS
output, operating off either 1.8, 2.5, 3.3 or 5.0 volt
supply.
The VCC4 uses fundamental or 3rd overtone
crystals for output frequencies >50MHz resulting
in low jitter performance. Also a monolithic IC,
which improves reliability and reduces cost, is
hermitically sealed.
Vectron International 267 Lowell Road, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]

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VCC4 pdf
VCC4 Data sheet
Table 4. Electrical Performance, 1.8V option
Parameter
Symbol Min
Typical Maximum Units
Frequency
Operating Supply Voltage 1
fO 1.544
VDD 1.71
1.8
75.000
1.89
MHz
V
Absolute Maximum Voltage
-0.5 3.6 V
Supply Current, Output Enabled
< 20 MHz
IDD
mA
5
20.01 to 70 MHz
15
Supply Current, Out disabled
Output Logic Levels
Output Logic High2
Output Logic Low2
Output Logic High Drive
Output Logic Low Drive
Output Logic High Drive3
Output Logic Low Drive3
Output Rise/Fall Time2
< 20.000 MHz
IDD
VOH
VOL
IOH
IOL
IOH
IOL
tR/tF
0.9*VDD
2.8
2.8
8
8
30
0.1*VDD
10
uA
V
V
mA
mA
mA
mA
ns
20.01 to 50.00 MHz
6
50.01 to 70.00 MHz
3
Duty Cycle4 (ordering option)
SYM
45/55
%
Operating temperature (ordering option)
Stability5 (ordering option)
-10/70 or –40/85
±25, ±50, ±100
°C
ppm
RMS Jitter, 12kHz to 20 MHz
0.5 1 ps
Period Jitter
ps
RMS
3.0
Peak to Peak
21
Output Enable/Disable6
V
Output Enabled
1.26
Output Disabled
0.5
Internal Enable Pull-Up resistor6
1 Mohm
Start-up time
8 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. Figure 7 defines these parameters. Figure 8 illustrates the operating conditions under which these parameters are tested and
specified.
3. Overtone designs, output frequencies>50MHz.
4. Symmetry is measured defined as On Time/Period.
5. Includes calibration tolerance, operating temperature, supply voltage variations, and shock and vibration (not under operation).
50 and 100 ppm options include aging.
6. Output will be enabled if enable/disable is left open.
V OH
50%
VO L
tR tF
On Time
Period
Figure 7. Output Waveform
ID D
+
V DD -
. 1µF
. 0 1µF
4
1
IC
VC +
-
23
1 5pF
Figure 8. Typical Output Test Conditions (25±5°C)
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]

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