AD9779A(2017) データシートの表示（PDF） - Analog Devices
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AD9779A Datasheet PDF : 55 Pages
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Data Sheet
100
95
90
0dBFS
85
–3dBFS
80
75
–6dBFS
70
65
60
55
50
0 40 80 120 160 200 240 280 320 360 400
fOUT (MHz)
Figure 24. AD9779A IMD Performance vs. fOUT,
Digital Full-Scale Input Over Output Frequency,
4× Interpolation, fDATA = 200 MSPS
100
95
90
20mA
85
10mA
80
75
30mA
70
65
60
55
50
0 40 80 120 160 200 240 280 320 360 400
fOUT (MHz)
Figure 25. AD9779A IMD Performance vs. fOUT,
Full-Scale Output Current Over Output Frequency,
4× Interpolation, fDATA = 200 MSPS
REF 0dBm
*PEAK
log
10dB
*ATTEN 20dB
EXT REF
DC-COUPLED
LGAV
51
W1 S2
S3 FC
AA
£(f):
FTUN
SWP
START 1.0MHz
*RES BW 20kHz
VBW 20kHz
STOP 400.0MHz
SWEEP 1.203s (601 pts)
Figure 26. AD9779A Single Tone,
4× Interpolation, fDATA = 100 MSPS, fOUT = 30 MHz
REF 0dBm
*PEAK
Log
10dB
AD9776A/AD9778A/AD9779A
*ATTEN 20dB
EXT REF
DC-COUPLED
LGAV
51
W1 S2
S3 FC
AA
£(f):
FTUN
SWP
START 1.0MHz
*RES BW 20kHz
VBW 20kHz
STOP 400.0MHz
SWEEP 1.203s (601 pts)
Figure 27. AD9779A Two-Tone Spectrum,
4× Interpolation, fDATA = 100 MSPS, fOUT = 30 MHz, 35 MHz
–142
–146
–150
–154
–158
–162
0dBFS
–3dBFS
–6dBFS
–166
–170
0
20
40
60
80
fOUT (MHz)
Figure 28. AD9779A Noise Spectral Density vs. fOUT,
Digital Full-Scale Over Output Frequency of Single-Tone Input,
2× Interpolation, fDATA = 200 MSPS
–150
–154
–158
–162
–166
fDAC = 200MSPS
fDAC = 400MSPS
fDAC = 800MSPS
–170
0
20
40
60
80
100
fOUT (MHz)
Figure 29. AD9779A Noise Spectral Density vs. fOUT,
fDAC Over Output Frequency for Eight-Tone Input with 500 kHz Spacing,
fDATA = 200 MSPS
Rev. C | Page 19 of 55
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