AD9540
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 16. DDS/DAC Residual Phase Noise
400 MHz Clock, 19.7 MHz Output
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 17. DDS/DAC Residual Phase Noise
400 MHz Clock, 51.84 MHz Output
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. DDS/DAC Residual Phase Noise
400 MHz Clock, 105.3 MHz Output
Data Sheet
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 19. DDS/DAC Residual Phase Noise
400 MHz Clock, 155.52 MHz Output
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 20. RF Divider and CML Driver Residual
Phase Noise (81.92 MHz In, 10.24 MHz Out)
1M 2M
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
–170
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 21. RF Divider and CML Driver Residual
Phase Noise (157.6 MHz In, 19.7 MHz Out)
1M 2M
Rev. C | Page 14 of 32