Datasheet

AD9776/AD9778/AD9779
Rev. A | Page 16 of 56
100
50
0
100
f
OUT
(MHz)
SFDR (dBc)
90
80
70
60
20 40 60 80
f
DATA
= 200MSPS
f
DATA
= 160MSPS
f
DATA
= 250MSPS
05361-011
Figure 12. AD9779 Out-of-Band SFDR vs. f
OUT
, 2× Interpolation
100
50
0
100
f
OUT
(MHz)
SFDR (dBc)
90
80
70
60
20 40 60 80
f
DATA
= 150MSPS
f
DATA
= 100MSPS
f
DATA
= 200MSPS
05361-012
Figure 13. AD9779 Out-of-Band SFDR vs. f
OUT
, 4× Interpolation
100
50
0
50
f
OUT
(MHz)
SFDR (dBc)
90
80
70
60
10 20 30 40
f
DATA
= 50MSPS
f
DATA
= 100MSPS
f
DATA
= 125MSPS
05361-013
Figure 14. AD9779 Out-of-Band SFDR vs. f
OUT
, 8× Interpolation
100
50
04
f
OUT
(MHz)
SFDR (dBc)
0
90
80
70
60
10 20 30
PLL OFF
PLL ON
05361-014
Figure 15. AD9779 In-Band SFDR, 4× Interpolation,
f
DATA
= 100 MSPS, PLL On/Off
100
50
08
f
OUT
(MHz)
SFDR (dBc)
0
90
80
70
60
20 40 60
–3dBFS
0dBFS
–6dBFS
05361-015
Figure 16. AD9779 In-Band SFDR vs. Digital Full-Scale Input
100
50
08
f
OUT
(MHz)
SFDR (dBc)
0
90
80
70
60
20 40 60
10mA
20mA
30mA
05361-016
Figure 17. AD9779 In-Band SFDR vs. Output Full-Scale Current