Audio Amp Recommendations

Discussion in 'General Discussion' started by jefflongo, Jun 30, 2018.

  1. jefflongo Broke BitBuilt Staff Member . .

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    Hey, I'm currently learning to design custom PCBs. I'm going to integrate an audio amp into my current project and I am trying to decide from the plethora of options online. Anybody have any recommendations? I'm not implementing a headphone jack and haven't decided on speakers; I am just looking for one that will give me good audio quality, is relatively simple, has a mute function, and being able to use a slider for volume would be a plus, though I'm sure I could implement a conversion from analog to digital volume control.
     
  2. MasterNate .

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  3. jefflongo Broke BitBuilt Staff Member . .

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    Hmm cool concept, but might be a little overkill for what I need.
     
  4. DeoNaught .

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    Anything wrong with using a PAM8803? I mean it fits all your needs, and very easy to intergrate
     
  5. jefflongo Broke BitBuilt Staff Member . .

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    I'm open to using it (aside the fact that it has digital volume adjustment), I'm just wondering if there's anything else recommended.
     
  6. JacksonS . . .

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    I think the LM49270 is a good choice even without the headphones. It requires very few external components except for the microcontroller. My code has slider functionality too.
     
  7. jefflongo Broke BitBuilt Staff Member . .

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    I'll look into it. Thanks! What speakers do you use with it?
     
  8. JacksonS . . .

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    700mW rectangular speakers like these work best for me.
     
  9. jefflongo Broke BitBuilt Staff Member . .

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    Hmm.. I still think that amp might still be a bit overkill for my needs. I've been looking at some different PAM variations, and these three seem to have analog volume control and a mute function.

    https://www.diodes.com/assets/Datasheets/PAM8603M.pdf
    https://www.diodes.com/assets/Datasheets/PAM8001.pdf
    https://www.diodes.com/assets/Datasheets/PAM8008.pdf

    Though I'm not sure what the differences are aside from the 8001 being 2W/ch as opposed to 3W/ch. Do these look good/simple to use? Has anyone used any of these before? Where is the sweetspot of power/channel? How should the power rating for your speaker match up with the power output per channel?

    EDIT: I think I'm going to go with the PAM8603M unless there are any reasons I shouldn't
     
    Last edited: Jul 1, 2018
  10. splain .

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    Sorry to be a newb, but can't you just add a pot to the input line, and have analog volume control for any amp? How do these PAM chips handle it differently having it "integrated?"
     
  11. jefflongo Broke BitBuilt Staff Member . .

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    You would need a pot for each input line
     
  12. splain .

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    Ok. Or a stereo pot if someone still wanted to use a PAM8803 with analog controls
     
  13. Portable noob .

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