Rainbow-electronics MAX3629 Manuale Utente Scaricare il pdf (Pagina 7)

MAX3629

+3.3V, Low-Jitter, Precision Clock Generator

with Multiple Outputs

_______________________________________________________________________________________

DIFFERENTIAL OUTPUT WAVEFORM

AT 125MHz (LVDS OUTPUT)

MAX3629 toc07

1ns/div

100mV/div

DIFFERENTIAL OUTPUT WAVEFORM

AT 156.25MHz (LVDS OUTPUT)

MAX3629 toc08

1ns/div

100mV/div

DIFFERENTIAL OUTPUT WAVEFORM

AT 312.5MHz (LVDS OUTPUT)

MAX3629 toc09

500ps/div

100mV/div

OUTPUT WAVEFORM

AT 125MHz (CMOS OUTPUT)

MAX3629 toc10

1ns/div

15mV/div

MEASURED USING SETUP IN FIGURE 2

SPURS INDUCED BY POWER-SUPPLY NOISE

vs. NOISE FREQUENCY

MAAX3629 toc11

NOISE FREQUENCY (kHz)

SPUR AMPLITUDE (dBc)

1000100

-80

-70

-60

-50

-40

-30

-20

-10

-90

10 10,000

= 156.25MHz, OUTPUT = Q0

NOISE

= 200mV

P-P

NOISE

= 100mV

P-P

NOISE

= 40mV

P-P

SPURS INDUCED BY POWER-SUPPLY NOISE

vs. NOISE FREQUENCY

MAAX3629 toc12

NOISE FREQUENCY (kHz)

SPUR AMPLITUDE (dBc)

1000100

-80

-70

-60

-50

-40

-30

-20

-10

-90

10 10,000

= 125MHz, OUTPUT = Q7

NOISE

= 200mV

P-P

NOISE

= 100mV

P-P

NOISE

= 40mV

P-P

Typical Operating Characteristics (continued)

(Typical values are at V

= +3.3V, T

= +25°C, crystal frequency = 25MHz.)

1 2 3 4 5 6 7 8 9 10 11 12

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