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LM386 replacement

Discussion in 'General Electronics Discussion' started by alex Chiu, Apr 5, 2015.

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  1. alex Chiu

    alex Chiu

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    3
    Apr 1, 2015
    The smallest gain of a LM386 is 20.

    Any chip that is PIN to PIN compatible to LM386 and the gain can be smaller, i.e. 5?
     
  2. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Why not just attenuate your input by a factor of five?
     
  3. alex Chiu

    alex Chiu

    14
    3
    Apr 1, 2015
    can, but need to redesign the PCB!
     
  4. davenn

    davenn Moderator

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    Sep 5, 2009
    there is nothing that is pin for pin compatible
    your best/ easiest choice is what hevans1944 said

    is this a one off or a production run ?
    maybe its something you should have thought about before designing the board ;)


    Dave
     
  5. hevans1944

    hevans1944 Hop - AC8NS

    4,560
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    Jun 21, 2012
    You could possibly do the attenuation (two resistors) external to the PCB. Or tack one between the input and common on the PCB and connect the other one in-line with the signal source wire. If this is a production product that could add considerable labor and possibly make it non-competitive to market.

    Well, hind-sight is always perfect 20-20 vision. Wish I had more of it.:D
     
  6. Colin Mitchell

    Colin Mitchell

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    313
    Aug 31, 2014
    You wont find any difference.
     
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