AD9550
1800
1600
1400
LVPECL
1200
1000
LVDS
800
600
400
200
0
0 100 200 300 400 500 600 700 800 900
FREQUENCY (MHz)
Figure 15. Peak-to-Peak Output Voltage vs. Frequency,
LVPECL and LVDS (100 Ω Load)
51
10pF
50
49
48
20pF
5pF
47
46
45
44
43
42
0
100
200
300
400
500
600
FREQUENCY (MHz)
Figure 16. Duty Cycle vs. Output Frequency, CMOS
60
59
LVPECL
58
57
LVDS
56
55
54
53
52
51
50
0 100 200 300 400 500 600 700 800 900
FREQUENCY (MHz)
Figure 17. Duty Cycle vs. Output Frequency,
LVPECL and LVDS (100 Ω Load)
2
200mV/DIV
500ps/DIV
Figure 18. Typical Output Waveform, LVPECL (800 MHz)
2
125mV/DIV
500ps/DIV
Figure 19. Typical Output Waveform, LVDS
(800 MHz, 3.5 mA Drive Current)
2
500mV/DIV
1.25ns/DIV
Figure 20. Typical Output Waveform, CMOS
(250 MHz, 10 pF Load)
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