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 16. Residual Phase Noise with FOUT = 159.5 MHz, FCLK = 400 MSPS
(Green), 4 × 100 MSPS (Red), and 20 × 20 MSPS (Blue)
AD9951
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)
Figure 17. Residual Phase Noise with FOUT = 9.5 MHz, FCLK = 400 MSPS (Green),
4 ×100 MSPS (Red), and 20 × 20 MSPS (Blue)
Rev. A | Page 11 of 28