Datasheet

AD9125
Rev. 0 | Page 11 of 56
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
0 50 100 150 200 250 300
HIGHEST DIGITAL SPUR (dBc)
f
OUT
(MHz)
f
DATA
= 125MSPS
f
DATA
= 250MSPS
09016-107
Figure 10. Highest Digital Spur vs. f
OUT
over f
DATA
, 2× Interpolation,
Digital Scale = 0 dBFS, f
SC
= 20 mA
–50
–55
–60
–65
–70
–75
–80
–85
–90
0 100 200 300 400 500 600
HIGHEST DIGITAL SPUR (dBc)
f
OUT
(MHz)
f
DATA
= 125MSPS
f
DATA
= 250MSPS
09016-108
Figure 11. Highest Digital Spur vs. f
OUT
over f
DATA
, 4× Interpolation,
Digital Scale = 0 dBFS, f
SC
= 20 mA
–50
–55
–60
–65
–70
–75
–80
–85
–95
–90
040035030025020015010050
HIGHEST DIGITAL SPUR (dBc)
f
OUT
(MHz)
f
DATA
= 125MSPS
09016-109
Figure 12. Highest Digital Spur vs. f
OUT
over f
DATA
, 8× Interpolation,
Digital Scale = 0 dBFS, f
SC
= 20 mA
09016-110
START 1.0MHz
#RES BW 10kHz
VBW 10kHz STOP 500.0MHz
SWEEP 6.017s (601 PTS)
2× INTERPOLATION,
SINGLE-TONE SPECTRUM,
f
DATA
= 250MSPS,
f
OUT
= 101MHz
Figure 13. 2× Interpolation, Single-Tone Spectrum
09016-111
START 1.0MHz
#RES BW 10kHz
VBW 10kHz STOP 500.0MHz
SWEEP 6.017s (601 PTS)
4× INTERPOLATION,
SINGLE-TONE SPECTRUM,
f
DATA
= 125MSPS,
f
OUT
= 101MHz
Figure 14. 4× Interpolation, Single-Tone Spectrum
09016-112
START 1.0MHz
#RES BW 10kHz
VBW 10kHz STOP 1.0GHz
SWEEP 12.05s (601 PTS)
8× INTERPOLATION,
SINGLE-TONE SPECTRUM,
f
DATA
= 125MSPS,
f
OUT
= 131MHz
Figure 15. 8× Interpolation, Single-Tone Spectrum