Datasheet

Data Sheet AD9510
Rev. B | Page 21 of 56
Figure 12. Phase Noise, LVPECL, DIV 1, FVCXO = 245.76 MHz,
f
OUT
= 245.76 MHz, f
PFD
= 1.2288 MHz, R = 25, N = 200
Figure 13. PLL Reference Spurs: VCO 1.5 GHz, f
PFD
= 1 MHz
Figure 14. Charge Pump Output Characteristics at VCPs = 3.3 V
Figure 15. Phase Noise, LVPECL, DIV 4, f
VCXO
= 245.76 MHz,
f
OUT
= 61.44 MHz, f
PFD
= 1.2288 MHz, R = 25, N = 200
Figure 16. Phase Noise (Referred to CP Output) vs. PFD Frequency (f
PFD
)
Figure 17. Charge Pump Output Characteristics at VCPs = 5.0 V
05046-058
0
–10
10
–20
–30
–40
–50
–60
–70
–80
–90
CENTER 245.75MHz 30kHz/ SPAN 300kHz
05046-063
100
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
CENTER 1.5GHz 250kHz/ SPAN 2.5MHz
05046-041
VOLTAGE ON CP PIN (V)
CURRENT FROM CP PIN (mA)
0 0.5 1.0 1.5 2.0 2.5 3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
PUMP DOWN PUMP UP
05046-059
0
–10
10
–20
–30
–40
–50
–60
–70
–80
–90
CENTER 61.44MHz 30kHz/ SPAN 300kHz
05046-057
PFD FREQUENCY (MHz)
PFD NOISE REFERRED TO PFD INPUT (dBc/Hz)
0.1 10010
1
–170
–
165
–
160
–155
–150
–145
–
140
–135
05046-042
VOLTAGE ON CP PIN (V)
CURRENT FROM CP PIN (mA)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
PUMP DOWN PUMP UP