AD9051
–7–rev. 一个
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain = 10.3mhz
encode = 40 msps
snr = 58.6db
sinad = 57.69db
0 2.5 5.0 7.5 10 12.5 15 17.5 20
图示 9. fft plot 40 msps, 10.3 mhz
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain = 15.2mhz
encode = 40 msps
snr = 58.47db
sinad = 57.04db
0 2.5 5.0 7.5 10 12.5 15 17.5 20
图示 10. fft plot 40 msps, 15.2 mhz
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain = 10.3mhz
encode = 60 msps
snr = 58.15db
sinad = 57.25db
0 3.8 7.5 11.3 15.0 18.8 22.5 26.3 30
图示 11. fft plot 60 msps, 10.3 mhz
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain = 15.2mhz
encode = 60 msps
snr = 58.29db
sinad = 57.23db
0 3.8 7.5 11.3 15.0 18.8 22.5 26.3 30
图示 12. fft plot 60 msps, 15.2 mhz
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain = 21.7mhz
encode = 60 msps
snr = 57.76db
sinad = 56.27db
0 3.8 7.5 11.3 15.0 18.8 22.5 26.3 30
图示 13. fft plot 60 msps, 21.7 mhz
频率 – mhz
0
–10
–40
–100
–30
–90
–20
–50
–80
–70
–60
dB
ain1 = 9.5mhz, –7dbfs
ain2 = 9.9mhz, –7dbfs
imd = –65dbc
encode = 60 msps
0 3.8 7.5 11.3 15.0 18.8 22.5 26.3 30
图示 14. 二-声调 imd