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AD9237 数据表(PDF) 13 Page - Analog Devices |
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AD9237 数据表(HTML) 13 Page - Analog Devices |
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13 / 25 page ![]() AD9237 Data Sheet Rev. C | Page 12 of 24 FREQUENCY (MHz) 0 –120 –100 –80 –60 –40 –20 SNR = 65.6dBc SFDR = 67.1dBc 0 30 32.5 25 20 15 10 5 Figure 14. AD9237-65 100 MHz FFT INPUT AMPLITUDE (dBFS) 90 80 70 60 50 40 30 –30 0 –5 –10 –15 –20 –25 SFDR dBFS 4V p-p SFDR dBc 4V p-p SNR dBFS 2V p-p SNR dBFS 4V p-p SNR dBc 2V p-p SNR dBc 4V p-p SFDR dBFS 2V p-p SFDR dBc 2V p-p Figure 15. AD9237-65 SNR/SFDR vs. Input Amplitude with fIN = 35 MHz INPUT AMPLITUDE (dBFS) 100 90 80 70 60 50 40 30 –30 0 –5 –10 –15 –20 –25 SFDR dBFS 2V p-p SNR dBc 2V p-p SNR dBc 1V p-p SFDR dBFS 1V p-p SFDR dBc 2V p-p SFDR dBc 1V p-p SNR dBFS 2V p-p SNR dBFS 1V p-p Figure 16. AD9237-40 SNR/SFDR vs. Input Amplitude with fIN = 20 MHz DUTY CYCLE (%) 90 50 55 60 65 70 75 80 85 30 70 65 60 55 50 45 40 35 SFDR DCS ENABLED SFDR DCS DISABLED SNR DCS ENABLED SNR DCS DISABLED Figure 17. SNR/SFDR vs. Clock Duty Cycle INPUT AMPLITUDE (dBFS) 90 80 70 60 50 40 30 –30 0 –5 –10 –15 –20 –25 SFDR dBFS 2V p-p SNR dBFS 2V p-p SNR dBFS 1V p-p SNR dBc 2V p-p SNR dBc 1V p-p SFDR dBc 2V p-p SFDR dBc 1V p-p SFDR dBFS 1V p-p Figure 18. AD9237-65 SNR/SFDR vs. Input Amplitude with fIN = 35 MHz INPUT AMPLITUDE (dBFS) 100 90 80 70 60 50 40 30 –30 0 –5 –10 –15 –20 –25 SFDR dBFS 2V p-p SNR dBc 2V p-p SNR dBc 1V p-p SFDR dBFS 1V p-p SFDR dBc 2V p-p SFDR dBc 1V p-p SNR dBFS 2V p-p SNR dBFS 1V p-p Figure 19. AD9237-20 SNR/SFDR vs. Input Amplitude with fIN = 10 MHz |
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