Rainbow-electronics AT73C246 Manual do Utilizador descarregar pdf (Página 74)

11050A–PMAAC–07-Apr-10

AT73C246

Figure 12-26. Treble Filters Response

12.8 Analog Audio Interfaces

12.8.1 Microphone Inputs

The following figures show recommended application circuits for microphone inputs

configurations:

• Mono - single-ended and differential microphone

• Stereo - single ended and differential microphone

• Long-wires microphone

Recommended resistor / capacitor / inductor value may be tuned to the final application,

depending on:

• the microphone specified load resistance,

• the high pass filter desired corner frequency,

• the level and frequency of unwanted signals to be rejected.

Depending also on desired high frequency filtering: common-mode or differential, the differential

suggested application diagrams may be modified.

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Rainbow-electronics AT73C246 Manual do Utilizador Página 74