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AD1855 Folha de dados(PDF) 11 Page - Analog Devices |
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AD1855 Folha de dados(HTML) 11 Page - Analog Devices |
11 / 15 page AD1855 –11– REV. B TYPICAL PERFORMANCE Figures 12 through 15 illustrate the typical analog performance of the AD1855, at FS = 48 kHz, as measured by an Audio Preci- sion System Two. Signal-to-Noise and THD+N performance are shown under a range of conditions. Figure 16 shows the power supply rejection performance of the AD1855. Figure 17 shows the noise floor of the AD1855. The digital filter transfer function is shown in Figure 18. The two-tone test in Figure 19 is per the SMPTE Standard for Measuring Intermodulation Distortion. 020 2468 10 12 14 16 18 0 –10 –90 –50 –60 –70 –80 –30 –40 –20 –100 –110 –120 –130 –140 FREQUENCY – kHz –150 –160 Figure 12. 1 kHz Tone at –0.5 dBFS (8K-Point FFT) 0 20 246 8 10 12 14 16 18 –40 –45 –85 –65 –70 –75 –80 –55 –60 –50 –100 –105 FREQUENCY – kHz 22 –110 –90 –95 –40 –45 –50 –55 –60 –65 –70 –75 –80 –85 –90 –95 –100 –105 –110 Figure 13. THD+N vs. Frequency at –0.5 dBFS 020 2 4 6 8 10 12 14 16 18 0 –10 –90 –50 –60 –70 –80 –30 –40 –20 –100 –110 –120 –130 –140 FREQUENCY – kHz –150 –160 0 –10 –90 –50 –60 –70 –80 –30 –40 –20 –100 –110 –120 –130 –140 –150 –160 Figure 14. Dynamic Range: 1 kHz at –60 dB –120 0 –110 –100 –90 –80 –70 –60 –50 –40 –30 0 –60 –80 –40 –20 –100 –120 AMPLITUDE – dBFS –20 –10 0 –20 –40 –60 –80 –100 –120 Figure 15. THD+N vs. Amplitude at 1 kHz |
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