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Audio DAC for 16ksps

Peter Kubelka
Prodigy 110 points
Other Parts Discussed in Thread: TLV320AIC3204

Hello,

I am newbie in this audio DACs and codec. I need some perspective circuit ( min. for 5 years ) for stream playback 16bit, 16ksps.

Can you recommend me something. Best with reference to libraries in C language. I'm using a microcontroller STM32F107.

Thank you

Peter

  • 0
    TI__Guru 55003 points
    Hi Peter,

    Most audio DACs and ADCs require an I2S bus to stream data to or from the device. It looks like your MCU has a few of these buses, so your first steps should be to get some I2S functionality working. Then you could try to connect the I2S lines to one of our EVMs. A good, simple DAC to get started on is the PCM5102EVM.
    www.ti.com/.../PCM5102EVM-U

    This EVM has a header on it so you could connect your MCU to it for debug and experimentation.

    Thanks!
    Paul
  • 0 in reply to Paul_Frost
    Prodigy 110 points

    Hello Paul,

    thank you for your response.

    It is possible to use the TLV320AIC3204  for my requirements ? (16bit, 16ksps) ?  It is a bit more expensive, more complicated but has more features.

    Peter

  • 0 in reply to Peter Kubelka
    TI__Guru 55003 points
    Hi Peter,

    I think the TLV320AIC3204 is limited to 48ksps. I think a discrete DAC and ADC might be a better way to go for simplicity. I will try to loop in another engineer that might be able to recommend a codec, if you prefer.

    Thanks,
    Paul
  • 0 in reply to Paul_Frost
    Prodigy 110 points

    Hello Paul,

    in datasheet  SLOS602C–SEPTEMBER2008–REVISED NOVEMBER 2014 is on page 31  written:

                   The TLV320AIC3204 includes a stereo audio DAC supporting data rates from 8kHz to 192kHz.
     
      Peter
     
     
  • 0 in reply to Peter Kubelka
    TI__Guru 55003 points
    Hi Peter,

    You are correct, it seems that it can support this. If you have specific questions about the configuration of the TLV320 (such as the PLL configuration), I recommended starting a new thread so that our CODEC team can take a look at it.

    Thanks!
    Paul