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Single Chip Speaker Amp

Discussion in 'Electronic Components' started by Captain Blammo, Nov 2, 2005.

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  1. I'm looking for a small through the hole chip that can drive an 8 Ohm
    speaker with a minimum of external components. I'd be feeding the audio out
    of an ISD1100.

    Any recommendations would be greatly appreciated!

    CB
     
  2. Dunno about "minimum of external components", but the LM386 fits the
    other requirements and it is cheap.


    Best regards,
    Spehro Pefhany
     
  3. moby

    moby Guest

    Some idea of size is needed here - a few milliwatts ? Hundreds of watts
    ?
    The Nat Semi LM3886 is my weapon of choice for about 25 watts (about
    $3).
    If I want 100 watts, 4 of them in bridge parallel make for a cost
    effective solution.
    For a few hundred milliwatts the Philips TDA7052A is great as it has a
    DC volume
    control and costs less than a dollar.
    M
     
  4. Ross Herbert

    Ross Herbert Guest

    There are a number which would fit the bill depending on what you are
    after. - you haven't been very specific.

    I will assume you are looking for a single channel amp capable of
    about 1W max and will run from 5V. Philips Semi make a few in this
    range but here is one for starters
    http://www.semiconductors.philips.com/acrobat_download/datasheets/TDA8541_5.pdf

    You can go to their website and sort your way through the others.
     
  5. Chris Jones

    Chris Jones Guest

    TDA2030, TDA2030A or TDA2040 etc.

    They draw a fair bit of quiescent current so are not really very good for
    battery operation, but otherwise I have found them to be excellent and very
    cheap. Don't believe anyone who tells you that these don't sound as good
    as some expensive amplifier, unless he proves it in a double-blind A-B
    test.

    Chris
     
  6. Panasonic makes a nice 5V 1W into 8 ohm speaker driver IC in an 8 pin
    PDIP. The AN7513 which is available from Digikey.

    Regards
    Anton Erasmus
     
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