AD9522-2 datasheet(21/84 Pages) AD

21 / 84 page

AD9522-2

Rev. 0 | Page 21 of 84

–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

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 13. VCO Tuning Voltage vs. Frequency

–10

–20

–30

–40

–50

–60

–70

–80

–90

–110

–100

100

145

140

135

130

125

120

115

110

105

FREQUENCY (MHz)

Figure 14. PFD/CP Spurs; 122.88 MHz; PFD = 15.36 MHz;

LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2212 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 15. Output Spectrum, LVDS; 122.88 MHz; PFD = 15.36 MHz;

LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2212 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 16. CMOS Output VOH (Static) vs. RLOAD (to Ground)

0.4

–0.4

–0.3

–0.2

–0.1

0.1

0.2

0.3

TIME (ns)

Figure 17. LVDS Output (Differential) @ 100 MHz,

Output Terminated 100 Ω Across Differential Pair

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