AD9520-2SLASHPCBZ datasheet(21/84 Pages) AD

21 / 84 page

AD9520-2

Rev. 0 | Page 21 of 84

TYPICAL PERFORMANCE CHARACTERISTICS

350

300

250

200

150

100

500

1000

1500

2000

2500

3000

FREQUENCY (MHz)

3 CHANNELS—6 LVPECL

3 CHANNELS—3 LVPECL

2 CHANNELS—2 LVPECL

1 CHANNEL—1 LVPECL

Figure 6. Total Current vs. Frequency, CLK-to-Output (PLL Off),

LVPECL Outputs Terminated 50 Ω to VS_DRV − 2 V

240

220

200

180

160

140

120

100

150

200

250

FREQUENCY (MHz)

3 CHANNELS—6 CMOS

3 CHANNELS—3 CMOS

2 CHANNELS—2 CMOS

1 CHANNEL—1 CMOS

Figure 7. Total Current vs. Frequency, CLK-to-Output (PLL Off),

CMOS Outputs with 10 pF Load

2.00

2.05

2.10

2.15

2.20

2.25

2.30

2.35

VCO FREQUENCY (GHz)

Figure 8. KVCO vs. VCO Frequency

3.0

2.5

2.0

1.5

1.0

0.5

VOLTAGE ON CP PIN (V)

PUMP UP

PUMP DOWN

Figure 9. Charge Pump Characteristics @ VCP = 3.3 V

4.0

3.0

4.5

3.5

2.5

2.0

1.5

1.0

0.5

VOLTAGE ON CP PIN (V)

PUMP DOWN

PUMP UP

Figure 10. Charge Pump Characteristics @ VCP = 5.0 V

–140

–145

–150

–155

–160

–165

–170

0.1

100

PFD FREQUENCY (MHz)

Figure 11. PFD Phase Noise Referred to PFD Input vs. PFD Frequency

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