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AD9645 数据表(PDF) 16 Page - Analog Devices |
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AD9645 数据表(HTML) 16 Page - Analog Devices |
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16 / 36 page ![]() AD9645 Data Sheet Rev. 0 | Page 16 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 32. SNR/SFDR vs. Analog Input Level; fIN = 9.7 MHz, fSAMPLE = 125 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 50 60 FREQUENCY (MHz) AIN1 AND AIN2 = –7dBFS SFDR = 89.6dBc IMD2 = –96.4dBc IMD3 = –90.8dBc Figure 33. Two-Tone 16k FFT with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 125 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 34. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 125 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 35. SNR/SFDR vs. fIN; fSAMPLE = 125 MSPS 120 0 –40 –20 0 20 40 60 80 TEMPERATURE (°C) 10 20 30 40 50 60 70 80 90 100 110 SNR SFDR Figure 36. SNR/SFDR vs. Temperature; fIN = 9.7 MHz, fSAMPLE = 125 MSPS 1.5 –1.5 OUTPUT CODE –1.0 –0.5 0 0.5 1.0 Figure 37. INL; fIN = 9.7 MHz, fSAMPLE = 125 MSPS |
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