Datasheet

AD9148 Data Sheet
Rev. B | Page 18 of 72
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50 100 150 200 250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
1×, 200MSPS
2×, 200MSPS
4×, 200MSPS
8×, 100MSPS
08910-024
Figure 24. Single-Tone NSD Performance vs. f
OUT
, Digital Scale = 0 dBFS,
4× f
DATA
= 200 MSPS, Full-Scale Current = 20 mA
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50 100 150 200 250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
2×, 200MSPS
4×, 200MSPS
8×, 100MSPS
08910-025
Figure 25. Single-Tone NSD Performance vs. f
OUT
, Digital Scale = 0 dBFS,
4× f
DATA
= 200 MSPS, Full-Scale Current = 20 mA, PLL On
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50 100 150 200 250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
0dB
–6dB
–12dB
–18dB
08910-026
Figure 26. Single-Tone NSD Performance vs. f
OUT
over Digital Scale,
4× f
DATA
= 200 MSPS, Full-Scale Current = 20 mA
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50
100 150 200
250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
1×, 200MSPS
2×, 200MSPS
4×, 200MSPS
8×, 100MSPS
08910-027
Figure 27. Eight-Tone NSD Performance vs. f
OUT
, Digital Scale = 0 dBFS,
Full-Scale Current = 20 mA
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50
100 150 200 250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
2×, 200MSPS
4×, 200MSPS
8×, 100MSPS
08910-028
Figure 28. Single-Tone NSD Performance vs. f
OUT
, Digital Scale = 0 dBFS,
Full-Scale Current = 20 mA, PLL On
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
0 50
100 150 200 250 300 350 400
NSD (dBm/Hz)
f
OUT
(MHz)
0dB
–6dB
–12dB
–18dB
08910-029
Figure 29. Eight-Tone NSD Performance vs. f
OUT
over Digital Scale,
4× f
DATA
= 200 MSPS, Full-Scale Current = 20 mA