AD9520-1SLASHPCBZ datasheet(22/80 Pages) AD

22 / 80 page

AD9520-1

Data Sheet

Rev. B | Page 22 of 80

–208

–210

–212

–214

–216

–218

–220

–222

–224

0.4

0.8

1.2

0.2

0.6

1.0

1.4

INPUT SLEW RATE (V/ns)

DIFFERENTIAL INPUT

SINGLE-ENDED INPUT

Figure 12. PLL Figure of Merit (FOM) vs. Slew Rate at REFIN/REFIN

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

100

145

140

135

130

125

120

115

110

105

FREQUENCY (MHz)

Figure 13. PFD/CP Spurs; 122.88 MHz; PFD = 15.36 MHz;

LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2457.6 MHz

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

122.38

122.58

122.78

122.98

123.18

123.38

FREQUENCY (MHz)

Figure 14. Output Spectrum, LVPECL; 122.88 MHz; PFD = 15.36 MHz;

LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2457.6 MHz

3.5

0.5

1.0

1.5

2.0

2.5

3.0

10k

100

RESISTIVE LOAD (Ω)

VS_DRV = 3.135V

VS_DRV = 2.35V

VS_DRV = 3.3V

VS_DRV = 2.5V

Figure 15. CMOS Output VOH (Static) vs. RLOAD (to Ground)

1.2

0.8

0.4

–0.4

–0.8

–1.2

024

TIME (ns)

Figure 16. LVPECL Output (Differential) at 100 MHz

1.0

0.6

0.2

–0.2

–0.6

–1.0

01.5

0.5

1.0

TIME (ns)

Figure 17. LVPECL Differential Voltage Swing at 1600 MHz

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