AD6643 查看數據表（PDF） - Analog Devices
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AD6643 Datasheet PDF : 40 Pages
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AD6643
120
100
SNR (dBFS)
80
60
SFDR (dBFS)
40
20
SNR (dBc)
SFDR (dBc)
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 12. AD6643-200 Single Tone SNR/SFDR vs. Input Amplitude (AIN), fIN =
90.1 MHz
100
95
SFDR (dBc)
90
85
80
75
70
SNR (dBFS)
65
60
65 75 85 95 105 115 125 135 145 155 165 175 185 195
FREQUENCY (MHz)
Figure 13. AD6643-200 Single Tone SNR/SFDR vs. Input Frequency (fIN)
0
–20
SFDR (dBc)
–40
IMD3 (dBc)
–60
–80
SFDR (dBFS)
–100
IMD3 (dBFS)
–120
–90.0 –78.5 –67.0 –55.5 –44.0 –32.5 –21.0 –7.0
INPUT AMPLITUDE (dBFS)
Figure 14. AD6643-200 Two Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 89.12 MHz, fIN2 = 92.12 MHz
Data Sheet
0
–20
SFDR (dBc)
–40
IMD3 (dBc)
–60
–80
SFDR (dBFS)
–100
IMD3 (dBFS)
–120
–90.0 –78.5 –67.0 –55.5 –44.0 –32.5 –21.0 –7.0
INPUT AMPLITUDE (dBFS)
Figure 15. AD6643-200 Two Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 184.12 MHz, fIN2 = 187.12 MHz
0
200MSPS
89.12MHz @ –7dBFS
–20 92.12MHz @ –7dBFS
SFDR = 89dBc (96dBFS)
–40
–60
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100
FREQUENCY (MHz)
Figure 16. AD6643-200 Two Tone FFT with fIN1 = 89.12 MHz, fIN2 = 92.12 MHz
0
200MSPS
184.12MHz @ –7dBFS
–20
187.12MHz @ –7dBFS
SFDR = 86dBc (93dBFS)
–40
–60
–80
–100
–120
–140
0
10 20 30 40 50 60 70 80 90 100
FREQUENCY (MHz)
Figure 17. AD6643-200 Two Tone FFT with fIN1 = 184.12 MHz, fIN2 = 187.12 MHz
Rev. C | Page 16 of 40
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