Rainbow Electronics AT73C246 - Manual (Page 74)

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.
Fs
dB