Analog Devices AD9776A Manual page 17

100
95
90
85
80
75
–6dBFS
70
65
60
55
50
0 40
Figure 24. AD9779A IMD Performance vs. Digital Full-Scale Input over
Output Frequency, 4× Interpolation, f
100
95
90
85
80
75
30mA
70
65
60
55
50
0 40
Figure 25. AD9779A IMD Performance vs. Full-Scale Output Current over
Output Frequency, 4× Interpolation, f
REF 0dBm
*PEAK
Log
10dB
LGAV
51
S2
W1
FC
S3
AA
£(f):
FTUN
SWP
START 1.0MHz
*RES BW 20kHz
Figure 26. AD9779A Single Tone, 4× Interpolation,
Downloaded from Elcodis.com electronic components distributor
0dBFS
–3dBFS
80 120 160 200 240 280 320
f
(MHz)
OUT
= 200 MSPS
DATA
20mA
10mA
80 120 160 200 240 280 320
f
(MHz)
OUT
= 200 MSPS
DATA
*ATTEN 20dB
EXT REF
DC-COUPLED
STOP 400.0MHz
VBW 20kHz SWEEP 1.203s (601 pts)
f = 100 MSPS, f = 30 MHz
DATA OUT
REF 0dBm
*PEAK
Log
10dB
LGAV
51
S2
W1
FC
S3
AA
£(f):
FTUN
SWP
360 400
START 1.0MHz
*RES BW 20kHz
–142
–146
–150
–154
–158
–162
–166
–170
360 400
Figure 28. AD9779A Noise Spectral Density vs. Digital Full-Scale over Output
–150
–154
–158
–162
–166
–170
Figure 29. AD9779A Noise Spectral Density vs. f
Rev. A | Page 17 of 60
AD9776A/AD9778A/AD9779A
*ATTEN 20dB
VBW 20kHz
SWEEP 1.203s (601 pts)
Figure 27. AD9779A Two-Tone Spectrum,
4× Interpolation, f = 100 MSPS, f
DATA OUT
0dBFS
–6dBFS
0 20 40
f
(MHz)
OUT
Frequency of Single Tone Input, f
2× Interpolation
f
= 200MSPS
DAC
f
= 800MSPS
DAC
0 20 40 60
f
(MHz)
OUT
Eight-Tone Input with 500 kHz Spacing, f
EXT REF
DC-COUPLED
STOP 400.0MHz
= 30 MHz, 35 MHz
–3dBFS
60 80
= 200 MSPS,
DATA
f
= 400MSPS
DAC
80 100
over Output Frequency for
DAC
= 200 MSPS
DATA