AD9516-2SLASHPCBZ datasheet(20/84 Pages) AD

20 / 84 page

AD9516-2

Rev. 0 | Page 20 of 84

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0.1

100

PFD FREQUENCY (MHz)

Figure 13. PFD Phase Noise Referred to PFD Input vs. PFD Frequency

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02.5

2.0

1.5

1.0

0.5

SLEW RATE (V/ns)

Figure 14. PLL Figure of Merit (FOM) vs. Slew Rate at REFIN/REFIN

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

2.0

2.4

2.3

2.2

2.1

FREQUENCY (GHz)

Figure 15. VCO Tuning Voltage vs. Frequency

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CENTER 122.88MHz

SPAN 50MHz

5MHz/DIV

Figure 16. PFD/CP Spurs; 122.88 MHz; PFD = 15.36 MHz;

LBW = 138 kHz; ICP = 3.0 mA; FVCO = 2.21 GHz

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CENTER 122.88MHz

SPAN 1MHz

100kHz/DIV

Figure 17. Output Spectrum, LVPECL; 122.88 MHz; PFD = 15.36 MHz;

LBW = 138 kHz; ICP = 3.0 mA; FVCO = 2.21 GHz

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–100

–90

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CENTER 122.88MHz

SPAN 1MHz

100kHz/DIV

Figure 18. Output Spectrum, LVDS; 122.88 MHz; PFD = 15.36 MHz;

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