AD9518-2 Analog Devices, Inc., AD9518-2 Datasheet - Page 17

• Manufacturer Part Number: AD9518-2
• Description: 6-output Clock Generator With Integrated 2.2 Ghz Vco
• Manufacturer: Analog Devices, Inc.

Figure 13. Output Spectrum, LVPECL; 122.88 MHz; PFD = 15.36 MHz;
–100
–110
–100
–110
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
10
2.0
0
Figure 12. PFD/CP Spurs; 122.88 MHz; PFD = 15.36 MHz;
0
CENTER 122.88MHz
CENTER 122.88MHz
Figure 11. VCO Tuning Voltage vs. Frequency
LBW = 138 kHz; I
LBW = 138 kHz; I
2.1
FREQUENCY (GHz)
CP
CP
= 3.0 mA; f
= 3.0 mA; f
100kHz/DIV
5MHz/DIV
2.2
VCO
VCO
= 2.21 GHz
= 2.21 GHz
2.3
SPAN 50MHz
SPAN 1MHz
2.4
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1600
1400
1200
1000
–0.2
–0.6
–1.0
–0.2
–0.6
–1.0
800
1.0
0.6
0.2
1.0
0.6
0.2
0
0
0
Figure 15. LVPECL Output (Differential) @ 1600 MHz
Figure 14. LVPECL Output (Differential) @ 100 MHz
Figure 16. LVPECL Differential Swing vs. Frequency
5
1
FREQUENCY (GHz)
10
TIME (ns)
TIME (ns)
1
15
2
20
AD9518-2
2
2
3
5