Datasheet

Data Sheet AD9520-3
Rev. A | Page 21 of 80
TYPICAL PERFORMANCE CHARACTERISTICS
350
300
250
200
150
100
0 500 1000 1500 2000 2500 3000
CURRENT (mA)
FREQUENCY (MHz)
3 CHANNELS—6 LVPECL
3 CHANNELS—3 LVPECL
2 CHANNELS—2 LVPECL
1 CHANNEL—1 LVPECL
07216-108
Figure 6. Total Current vs. Frequency, CLK-to-Output (PLL Off),
LVPECL Outputs Terminated 50 Ω to V
S_DRV
− 2 V
240
220
200
180
160
140
120
100
80
0 50 100 150 200 250
CURRENT (mA)
FREQUENCY (MHz)
3 CHANNELS—6 CMOS
3 CHANNELS—3 CMOS
2 CHANNELS—2 CMOS
1 CHANNEL—1 CMOS
07216-109
Figure 7. Total Current vs. Frequency, CLK-to-Output (PLL Off),
CMOS Outputs with 10 pF Load
70
65
60
55
50
45
40
35
30
25
1.7 1.8 1.9 2.0 2.1 2.2 2.3
K
VCO
(MHz/V)
VCO FREQUENCY (GHz)
07216-010
Figure 8. K
VCO
vs. VCO Frequency
5
4
3
2
1
0
0 3.53.02.52.01.51.00.5
CURRENT FROM CP PIN (mA)
VOLTAGE ON CP PIN (V)
PUMP UPPUMP DOWN
07216-111
Figure 9. Charge Pump Characteristics at CP
V
= 3.3 V
5
4
3
2
1
0
0 5.04.03.0 4.53.52.52.01.51.00.5
CURRENT FROM CP PIN (mA)
VOLTAGE ON CP PIN (V)
PUMP DOWN PUMP UP
07216-112
Figure 10. Charge Pump Characteristics at CP
V
= 5.0 V
–140
–145
–150
–155
–160
–165
–170
0.1 1 10010
PFD PHASE NOISE REFERRED TO PFD INPUT
(dBc/Hz)
PFD FREQUENCY (MHz)
07216-013
Figure 11. PFD Phase Noise Referred to PFD Input vs. PFD Frequency