0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 15. Residual Phase Noise, 103 MHz fOUT, 1 GHz REFCLK
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10 100
1k
10k 100k 1M
FREQUENCY (Hz)
10M 100M
Figure 16. Fractional Divider Loop Residual Phase Noise,
fIN = 115 MHz, fOUT = 1550 MHz, Loop BW = 50 kHz
REF LVL
0dBm
0
–10
DELTA 1 [T1]
RBW
0.0dB VBW
0.00000000Hz SWT
1kHz RF ATT
1kHz
3.8s UNIT
10dB
dBm
A
–20
–30
1AP
–40
–50
–60
–70
–80
–90
1
–100
CENTER 1.55GHz
150kHz/
SPAN 1.5MHz
Figure 17. Fractional Divider Loop SFDR, fIN = 96.9 MHz,
fOUT = 1550 MHz, BW = 1.5 MHz
AD9858
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 18. Residual Phase Noise, 403 MHz fOUT, 1 GHz REFCLK
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10 100
1k
10k 100k 1M
FREQUENCY (Hz)
10M 100M
Figure 19. Translation Loop Residual Phase Nois,e
fLO = 1500 MHz, fOUT = 1550 MHz, Loop BW = 50 kHz
REF LVL
0dBm
0
–10
–20
–30
–40
–50
–60
–70
–80
DELTA 1 [T1]
RBW
–56.76dB VBW
423.84769539kHz SWT
1
2kHz RF ATT
2kHz
940s UNIT
10dB
dBm
A
1AP
1
–90
–100
CENTER 1.55GHz
150kHz/
SPAN 1.5MHz
Figure 20. Fractional Divider Loop SFDR, fIN = 97.3 MHz,
fOUT = 1550 MHz, BW = 1.5 MHz
Rev. C | Page 11 of 32