AD9520-4 Analog Devices, Inc., AD9520-4 Datasheet - Page 23

• Manufacturer Part Number: AD9520-4
• Description: 12 Lvpecl/24 Cmos Output Clock Generator With Integrated 1.6 Ghz Vco
• Manufacturer: Analog Devices, Inc.

–0.2
–0.6
–1.0
Figure 20. CMOS Output with 2 pFand 10 pF Load @ 250 MHz
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
1.0
0.6
0.2
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
Figure 18. LVPECL Differential Voltage Swing @ 1600 MHz
0
0
0
0
0
Figure 19. CMOS Output with 10 pF Load @ 25 MHz
10
1
20
2
30
3
0.5
40
4
TIME (ns)
TIME (ns)
TIME (ns)
2pF LOAD
50
5
60
6
1.0
LOAD
70
10pF
7
8
8
0
90
9
100
1
10
.5
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Figure 23. Internal VCO Phase Noise (Absolute), Direct-to-LVPECL @ 1450 MHz
Figure 22. CMOS Output Swing vs. Frequency and Capacitive Load
–100
–110
–120
–130
–140
–150
–40
–50
–60
–70
–80
–90
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
2.0
1.8
1.6
1.4
1.2
1.0
Figure 21. LVPECL Differential Voltage Swing vs. Frequency
0
1k
0
0
100
0.5
10k
200
1.0
FREQUENCY (MHz)
FREQUENCY (GHz)
100k
FREQUENCY (Hz)
300
1.5
400
1M
2.0
500
10M
AD9520-4
2.5
600
2pF
10pF
20pF
100M
7
3
00
.0