AD9239 查看數據表（PDF） - Analog Devices
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AD9239 Datasheet PDF : 41 Pages
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Data Sheet
100
90
SFDR (dBFS)
80
70
SNR (dBFS)
60
50
SFDR (dB)
40
30
SNR (dB)
20
10
0
–90 –80 –70 –60 –50 –40 –30 –20 –10 0
ANALOG INPUT LEVEL (dBFS)
Figure 16. SNR/SFDR vs. Analog Input Level, fIN = 84.3 MHz, fSAMPLE = 250 MSPS
0
AIN1 AND AIN2 = –7.0dBFS
SFDR = 77.26dBc
–20
IMD2 = –86.55dBc
IMD3 = –77.26dBc
–40
–60
–80
–100
–120
0
10
20 30
40 50 60 70 80
FREQUENCY (MHz)
Figure 17. Two-Tone 32k FFT with fIN1 = 140.2 MHz and fIN2 = 141.3 MHz,
fSAMPLE = 170 MSPS
AD9239
0
AIN1 AND AIN2 = –7.0dBFS
SFDR = 76.88dBc
–20
IMD2 = –78.75dBc
IMD3 = –78.68dBc
–40
–60
–80
–100
–120
0
20
40
60
80
100
FREQUENCY (MHz)
Figure 19. Two-Tone 32k FFT with fIN1 = 170.2 MHz and fIN2 = 171.3 MHz,
fSAMPLE = 2 10 MSPS
0
AIN1 AND AIN2 = –7.0dBFS
SFDR = 74.48dBc
–20 IMD2 = –76.10dBc
IMD3 = –74.48dBc
–40
–60
–80
–100
–120
0
20
40
60
80
100
120
FREQUENCY (MHz)
Figure 20. Two-Tone 32k FFT with fIN1 = 140.2 MHz and fIN2 = 141.3 MHz,
fSAMPLE = 250 MSPS
0
AIN1 AND AIN2 = –7.0dBFS
SFDR = 75.44dBc
–20 IMD2 = –78.34dBc
IMD3 = –75.44dBc
–40
–60
–80
–100
–120
0
20
40
60
80
100
FREQUENCY (MHz)
Figure 18. Two-Tone 32k FFT with fIN1 = 140.2 MHz and fIN2 = 141.3 MHz,
fSAMPLE = 210 MSPS
0
AIN1 AND AIN2 = –7.0dBFS
SFDR = 74.29dBc
–20 IMD2 = –76.51dBc
IMD3 = –74.30dBc
–40
–60
–80
–100
–120
0
20
40
60
80
100
120
FREQUENCY (MHz)
Figure 21. Two-Tone 32k FFT with fIN1 = 170.2 MHz and fIN2 = 171.3 MHz,
fSAMPLE = 250 MSPS
Rev. E | Page 13 of 40
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