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Digital microphone interface

Dong jin Seo
Prodigy 10 points

Other Parts Discussed in Thread: ADC3140EVM-PDK

hello!

I would like to measure the data of a PDM digital microphone(SPH0641LM4H-1) with the structure below.

digital microphone(PDM) <=> TI Audio IC <=> Check the microphone sensitivity and sound pressure. 

Can you recommend the audio ic? I ca use it with the above structure
C language reference code is also included.

thanks!!

  • 0
    TI__Guru 64765 points

    Hello,

    The easiest way to do what you're looking to achieve would be to order a TI Audio ADC EVM and then use the USB Audio capability built into the EVM to stream the digital microphone signal to your computer's Audio processing program of preference (e.g. Audacity).

    The ADC3140EVM-PDK should work for what you're looking to achieve and it can be configured for digital microphone inputs as described in the EVM User's Guide.