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AD7623AST Datasheet(PDF) 14 Page - Analog Devices |
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AD7623AST Datasheet(HTML) 14 Page - Analog Devices |
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14 / 29 page ![]() AD7623 Rev. 0 | Page 13 of 28 0 –180 0 600 FREQUENCY (kHz) –20 –40 –60 –80 –100 –120 –140 –160 fS = 1.33MSPS fIN = 20.03kHz SNR = 89.4dB THD = –104.1dB SFDR = 107.2dB SINAD = 89.3dB 500 100 200 300 400 Figure 11. FFT 20 kHz 92 82 1 1000 FREQUENCY (kHz) 13.4 13.8 14.2 14.6 15.0 15.4 SNR SINAD ENOB 90 88 86 84 10 100 Figure 12. SNR, SINAD and ENOB vs. Frequency –70 –120 1 1000 FREQUENCY (kHz) 20 30 40 50 60 70 80 90 100 110 120 –75 –80 –85 –90 –95 –100 –105 –110 –115 10 100 SECOND HARMONIC THIRD HARMONIC THD SFDR Figure 13. THD, Harmonics, and SFDR vs. Frequency 0 –180 0 600 FREQUENCY (kHz) –20 –40 –60 –80 –100 –120 –140 –160 fS = 1.33MSPS fIN = 100.13kHz SNR = 89.2dB THD = –95.6dB SFDR = 96dB SINAD = 88.4dB 500 100 200 300 400 Figure 14. FFT 100 kHz 90 82 –55 125 TEMPERATURE (°C) 13.5 14.0 14.5 15.0 15.5 89 88 87 86 85 84 83 –35 –15 5 25 45 65 85 105 ENOB SINAD SNR Figure 15. SNR, SINAD, and ENOB vs. Temperature –80 –130 –55 125 TEMPERATURE (°C) –85 –90 –95 –100 –105 –110 –115 –120 –125 –35 –155 25456585 105 50 55 60 65 70 75 80 85 90 95 100 SECOND HARMONIC THIRD HARMONIC THD SFDR Figure 16. THD, Harmonics, and SFDR vs. Temperature |
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