The Cirrus Logic CS43L22 "audio DAC with integrated class D speaker
driver" from the stm32f4discovery board might do the trick for you. It
certainly is tiny (6 X 6 mm QFN).

datasheet:
http://www.cirrus.com/en/pubs/proDatasheet/CS43L22_F2.pdf

Btw, what sort of thing might this be going into?

On Wed, Jun 11, 2014 at 8:23 PM, Martin K <martin@nnytech.net> wrote:
> Does anyone know of an integrated DAC / speaker amplifier?
> I'm using a 16 bit SPI DAC which feeds an all-inclusive class-D speaker
> driver chip. It works well except when the power supply gets nasty due
> to RF in the vicinity.
>
> To that end, I've powered the DAC from it's own 3.0V LDO, however this
> has not solved the noise problem.
>
> I'm sure I've left out details, but my primary question remains: does
> anyone know of an integrated DAC/amplifier that can drive a speaker
> directly and is hopefully really tiny?
>
> Thanks,
> -
> Martin K
> --
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Jason White
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