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AD9645 데이터시트(PDF) 13 Page - Analog Devices |
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AD9645 데이터시트(HTML) 13 Page - Analog Devices |
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13 / 36 page ![]() Data Sheet AD9645 Rev. 0 | Page 13 of 36 120 –20 –90 0 INPUT AMPLITUDE (dBFS) SFDRFS SFDR SNRFS SNR 0 20 40 60 80 100 –80 –70 –60 –50 –40 –30 –20 –10 Figure 15. SNR/SFDR vs. Analog Input Level; fIN = 9.7 MHz, fSAMPLE = 80 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) AIN1 AND AIN2 = –7dBFS SFDR = 90.8dBc IMD2 = –94.2dBc IMD3 = –92.7dBc Figure 16. Two-Tone 16k FFT with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 80 MSPS 0 –20 –40 –60 –80 –100 –120 –90 –10 –30 –50 –70 INPUT AMPLITUDE (dBFS) SFDR (dBc) SFDR (dBFS) IMD3 (dBc) IMD3 (dBFS) Figure 17. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 80 MSPS 110 0 0 260 INPUT FREQUENCY (MHz) 70 10 20 30 40 50 60 80 90 100 100 120 140 80 20 40 60 240 160 180 200 220 SFDR SNR Figure 18. SNR/SFDR vs. fIN; fSAMPLE = 80 MSPS 120 0 –40 –20 0 20 40 60 80 TEMPERATURE (°C) 10 20 30 40 50 60 70 80 90 100 110 SFDR SNR Figure 19. SNR/SFDR vs. Temperature; fIN = 9.7 MHz, fSAMPLE = 80 MSPS 1.0 –0.8 OUTPUT CODE –0.6 –0.4 –0.2 0 0.4 0.2 0.6 0.8 Figure 20. INL; fIN = 9.7 MHz, fSAMPLE = 80 MSPS |
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