Specifications

WM_PRJ_Q2501_PTS_002 - 001
March 2004
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3.3.6.2.3 Main Microphone input typical implementation
Figure 20: Example of main microphone (MIC2) implementation
3.3.6.2.4 Auxiliary Microphone Inputs (MIC1)
MIC1 inputs do not include internal bias, making these inputs the standard
ones for an external headset or a hands-free kit, connected either in differential
or single-ended mode.
To use these inputs with an electret microphone, bias has to be generated
outside the WISMO Quik Q2501 module according to the characteristics of this
electret microphone.
AC coupling is already embedded in the module.
Pin description
Signal Pin # I/O I/O type Description
MIC1P 62 I Analog Microphone 1 positive input
MIC1N 64 I Analog Microphone 1 negative input