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TLC540: Using data converter as audio converter (TLC540 for example)

Oliver Dosen
Intellectual 350 points
Part Number: TLC540
Other Parts Discussed in Thread: CC1200

Hello,

I am wondering why I cant use ordinary data converters, for example TLC540 (or any other), for converting analog audio signal to digital? I know there is specific parts for that which names starts with PCM but the thing I need is SPI output because I want to connect converter to MCU and not much mcus have i2s and I dont need stereo. Some algorithm would be: convertor outputs audio data, mcu buffers byte by byte (for example) via SPI  and after that mcu outputs data with audio data to SPI and to CC1200, for example.

Thank you.

  • 0
    TI__Genius 16890 points

    Hi Oliver,

    You could use a normal ADC for audio signals, however you will not get as good of a result as with an audio ADC though.  For example, the TLC540 is an 8-bit device, whereas many of the audio ADCs are 24 bit devices. 

    If you submit your question to the audio forum, they can give you more guidance on the audio ADCs vs normal ADCs.

    Mike