Datasheet
Data Sheet AD9148
Rev. B | Page 15 of 72
TYPICAL PERFORMANCE CHARACTERISTICS
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
0 50 100 150 200 250 300
f
OUT
(MHz)
HARMONIC LEVEL (dBc)
f
DATA
= 200MSPS, SECOND HARMONIC
f
DATA
= 200MSPS, THIRD HARMONIC
f
DATA
= 310MSPS, SECOND HARMONIC
f
DATA
= 310MSPS, THIRD HARMONIC
08910-006
Figure 6. Harmonic Level vs. f
OUT
over f
DATA
, 2× Interpolation,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
f
OUT
(MHz)
HARMONIC LEVEL (dBc)
f
DATA
= 150MSPS, SECOND HARMONIC
f
DATA
= 150MSPS, THIRD HARMONIC
f
DATA
= 250MSPS, SECOND HARMONIC
f
DATA
= 250MSPS, THIRD HARMONIC
0 50 100 150 200 250 300 350 400 450 500
08910-007
Figure 7. Harmonic Level vs. f
OUT
over f
DATA
, 4× Interpolation,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA
0 50 100 150 200 250 300 350 400 450 500
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
f
OUT
(MHz)
HARMONIC LEVEL (dBc)
f
DATA
= 125MSPS, SECOND HARMONIC
f
DATA
= 125MSPS, THIRD HARMONIC
08910-008
Figure 8. Harmonic Level vs. f
OUT
, 8× Interpolation over f
DATA
= 125 MSPS,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
0 50 100 150 200 250 300
SPUR LEVEL (dBc)
f
OUT
(MHz)
f
DATA
= 200MSPS,
f
DATA
+
f
OUT
f
DATA
= 310MSPS,
f
DATA
+
f
OUT
08910-009
Figure 9. Highest Digital Spur vs. f
OUT
over f
DATA
, 2× Interpolation,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
f
OUT
(MHz)
SPUR LEVEL (dBc)
f
DATA
= 150MSPS,
f
DATA
+
f
OUT
f
DATA
= 250MSPS, 2
f
DATA
–
f
OUT
0 50 100 150 200 250 300 350 400 450 500
08910-010
Figure 10. Highest Digital Spur vs. f
OUT
over f
DATA
, 4× Interpolation,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
f
OUT
(MHz)
SPUR LEVEL (dBc)
f
DATA
= 125MSPS,
f
DATA
+
f
OUT
0 50 100 150 200 250 300 350 400 450 500
08910-011
Figure 11. Highest Digital Spur vs. f
OUT
, 8× Interpolation, f
DATA
= 125 MSPS,
Digital Scale = 0 dBFS, Full-Scale Current = 20 mA