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AD7643 Arkusz danych(PDF) 13 Page - Analog Devices |
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AD7643 Arkusz danych(HTML) 13 Page - Analog Devices |
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13 / 28 page ![]() AD7622 Rev. 0 | Page 13 of 28 0 –140 –120 –100 –80 –60 –40 –20 –160 –180 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) fS = 2MSPS fIN = 20.1kHz SNR = 92dB THD = –117dB SFDR = 103dB SINAD = 92dB Figure 12. FFT 20 kHz 95 79 81 83 85 87 89 91 93 77 75 16.0 12.8 13.2 13.6 14.0 14.4 14.8 15.2 15.6 12.4 12.0 1 10 100 1000 FREQUENCY (kHz) SNR ENOB SINAD Figure 13. SNR, SINAD, and ENOB vs. Frequency –70 –80 –90 –100 –110 –120 –130 –140 120 40 50 60 70 80 90 100 110 30 20 1 10 100 1000 FREQUENCY (kHz) SECOND HARMONIC THIRD HARMONIC THD SFDR Figure 14. THD, Harmonics, and SFDR vs. Frequency 0 –140 –120 –100 –80 –60 –40 –20 –160 –180 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) fS = 2MSPS fIN =100.7kHz SNR = 91dB THD = –100dB SFDR = 101dB SINAD = 90.5dB Figure 15. FFT 100 kHz TEMPERATURE (°C) –55 –35 –15 5 25 45 65 85 105 125 14.0 14.5 15.0 15.5 16.0 86 87 90 89 88 91 92 93 94 SNR ENOB SINAD Figure 16. SNR, SINAD, and ENOB vs. Temperature TEMPERATURE (°C) –55 –35 –15 5 25 45 65 85 105 125 SFDR THD SECOND HARMONIC THIRD HARMONIC 60 70 80 90 100 110 120 –140 –130 –120 –110 –100 –90 –80 Figure 17. THD, Harmonics, and SFDR vs. Temperature |
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