Rainbow-electronics AT73C246 Manuale Utente Scaricare il pdf (Pagina 148)

148

11050A–PMAAC–07-Apr-10

AT73C246

15.5 AUDIO

Unless otherwise noted, the reported measurement were performed at room temperature with AVDD = 3.3V supplied from

LDO4. Typical components as described in Section 5. “Application Block Diagram” on page 8 are used.

Figure 15-13. Microphone Recording Waveforms

Dierential Microphone Recording ( Path 5)

-1dBV / 1kHz Input - Fs = 48kHz - 16kpts FFT

Dierential Microphone Recording ( Path 5)

-60dBV / 1kHz Input - Fs = 48kHz - 16kpts FFT

Dierential Microphone Recording ( Path 5)

THD+N Ratio Versus Input Level

1 2 ... 143 144 145 146 147 148 149 150 151 152 153 ... 158 159

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Rainbow-electronics AT73C246 Manuale Utente Pagina 148