Datasheet

AD9780/AD9781/AD9783 Data Sheet
Rev. B | Page 16 of 32
SFDR (dBc)
f
OUT
(MHz)
100
40
45
50
55
60
65
70
75
80
85
90
95
0 50 100 150 200 500250 300 350 400 450
06936-041
Figure 41. AD9781 SFDR vs. f
OUT
in Baseband and Mix Modes, at 500 MSPS,
FS = 20 mA
IMD (dBc)
f
OUT
(MHz)
100
40
45
50
55
60
65
70
75
80
85
90
95
0 60 120 180 240 600300 360 420 480 540
06936-042
IMD @ 500MSPS
Figure 42. AD9781 IMD vs. f
OUT
in Baseband and Mix Modes, at 500 MSPS,
FS = 20 mA
NSD (dBm/Hz)
f
OUT
(MHz)
–170
–168
–166
–164
–162
–160
–158
–156
–154
–152
–150
–148
–146
–144
–142
–140
0
50 100 150 200 500250 300 350 400 450
1-TONE
8-TONE
06936-043
Figure 43. AD9781 One-Tone, Eight-Tone NSD vs. f
OUT
in Baseband and Mix
Modes, at 500 MSPS, FS = 20 mA
–90
–50
–55
–60
–65
–70
–75
–80
–85
0 500400300200100
ACLR (dBc)
f
OUT
(MHz)
FIRST
ADJACENT
CHANNEL
SECOND
ADJACENT
CHANNEL
THIRD
ADJACENT
CHANNEL
06936-044
Figure 44. AD9781 ACLR for One-Carrier W-CDMA Baseband and Mix Modes,
at 491.52 MSPS, FS = 20 mA
0.1
0.2
0
–0.1
–0.2
–0.3
–0.6
–0.5
–0.4
0
06936-045
CODE
1024 2048
LSB
3072 4096
Figure 45. AD9780 INL, FS = 20 mA
0.04
0.02
0
–0.02
–0.06
–0.08
–0.10
–0.12
–0.04
0
06936-046
CODE
1024 2048
LSB
3072 4096
Figure 46. AD9780 DNL, FS = 20 mA