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AD9042ST/PCB 数据表(PDF) 10 Page - Analog Devices |
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AD9042ST/PCB 数据表(HTML) 10 Page - Analog Devices |
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10 / 24 page ![]() AD9042 –10– REV. A FREQUENCY – MHz 0 –80 –120 –40 –100 –20 –60 dc 20.5 4.1 8.2 12.3 16.4 ENCODE = 41 MSPS AIN = 19.5MHz @ –29 dBFS NO DITHER 2 4 68 8 7 5 3 Figure 20. 4K FFT without Dither ANALOG INPUT POWER LEVEL – dBFS 100 0 –80 0 –70 –60 –50 –40 –30 –20 –10 90 60 40 20 10 80 70 50 30 ENCODE = 41 MSPS AIN = 19.5MHz NO DITHER SFDR = 80dB REFERENCE LINE Figure 21. SFDR without Dither FREQUENCY – MHz 0 –80 –120 –40 –100 –20 –60 dc 20.5 4.1 8.2 12.3 16.4 ENCODE = 41 MSPS AIN = 2.5MHz @ –26 dBFS NO DITHER Figure 22. 128K FFT without Dither FREQUENCY – MHz 0 –80 –120 –40 –100 –20 –60 dc 20.5 4.1 8.2 12.3 16.4 ENCODE = 41 MSPS AIN = 19.5MHz @ –29 dBFS DITHER = –32.5dBm 24 6 8 8 7 5 3 Figure 23. 4K FFT with Dither ANALOG INPUT POWER LEVEL – dBFS 100 0 –80 0 –70 –60 –50 –40 –30 –20 –10 90 60 40 20 10 80 70 50 30 ENCODE = 41 MSPS AIN = 19.5MHz DITHER = –32.5dBm SFDR = 80dB REFERENCE LINE Figure 24. SFDR with Dither FREQUENCY – MHz 0 –80 –120 –40 –100 –20 –60 dc 20.5 4.1 8.2 12.3 16.4 ENCODE = 41 MSPS AIN = 2.5MHz@–26dBFS DITHER = –32.5dBm Figure 25. 128K FFT with Dither |
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