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Original question:

TLV320AIC3104: How to implement AEC with TLV320AIC3104

TLV320AIC3104: TLV320AIC3104

Shani Ravaliya
Prodigy 190 points
Part Number: TLV320AIC3104


Hi Team,

We are designing wearable device and used TLV320AI3104 audio codec, but we are not getting proper voice while calling, and also feeling the echo on the voice. I am attaching mic section can you please review the mic section.

  • 0
    TI__Mastermind 22950 points

    Hello Shani,

    - Unused inputs should be AC coupled to GND via 0.47uF capacitor. 

    - MICBIAS is a very clean signal and should not have a capacitor. We recommend you remove C46 if possible. 

    These are the only two things that I saw needed to be changed in the schematic but may not be the cause of the issue you are seeing. Can you please send over your register configuration as well as some scope shots of WCLK, BCLK, DOUT?

    Regards,

    Aaron