AD9042 Ver la hoja de datos (PDF) - Analog Devices
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AD9042 Datasheet PDF : 24 Pages
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AD9042
0
ENCODE = 41 MSPS
AIN = 19.5MHz @ –29 dBFS
–20 NO DITHER
–40
–60
–80
24 6 8
87 53
–100
–120
dc
4.1
8.2
12.3
16.4
20.5
FREQUENCY – MHz
Figure 20. 4K FFT without Dither
100
90
ENCODE = 41 MSPS
80
AIN = 19.5MHz
NO DITHER
70
60
50
40
30
20
SFDR = 80dB
10
REFERENCE LINE
0
–80 –70 –60 –50 –40 –30 –20 –10
0
ANALOG INPUT POWER LEVEL – dBFS
Figure 21. SFDR without Dither
0
ENCODE = 41 MSPS
AIN = 2.5MHz @ –26 dBFS
–20
NO DITHER
–40
–60
–80
–100
–120
dc
4.1
8.2
12.3
16.4
20.5
FREQUENCY – MHz
Figure 22. 128K FFT without Dither
0
ENCODE = 41 MSPS
AIN = 19.5MHz @ –29 dBFS
–20
DITHER = –32.5dBm
–40
–60
–80
24 6 8
87
53
–100
–120
dc
4.1
8.2
12.3
16.4
20.5
FREQUENCY – MHz
Figure 23. 4K FFT with Dither
100
90
ENCODE = 41 MSPS
80
AIN = 19.5MHz
DITHER = –32.5dBm
70
60
50
40
30
20
SFDR = 80dB
10
REFERENCE LINE
0
–80 –70 –60 –50 –40 –30 –20 –10
0
ANALOG INPUT POWER LEVEL – dBFS
Figure 24. SFDR with Dither
0
ENCODE = 41 MSPS
AIN = 2.5MHz@–26dBFS
–20
DITHER = –32.5dBm
–40
–60
–80
–100
–120
dc
4.1
8.2
12.3
16.4
20.5
FREQUENCY – MHz
Figure 25. 128K FFT with Dither
–10–
REV. A
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