Lpc2000

--- In lpc2000@yahoogroups.com, "Ed Schlunder" <zilym@...> wrote:
>
> --- In lpc2000@yahoogroups.com, Xtian Xultz <xultz@> wrote:
> 
> > Just for curisity, how good is the audio generated by the PWM,
> sounds good, or 
> > when I want quality the way is to use a good DAC?
> 
> Use a DAC if you can. The sound quality is decent with amplified
> speakers. With earphones it is less than perfect because there is no
> op-amp.
> 
> Unfortunately, most audio DACs require I2S input, which LPC2103 does
> not have support for. They usually cost a lot too, you might pay more
> for a DAC than the LPC2103 chip itself!
>

I built a project like this last summer: an LPC2106, a CF used as a
FAT32 disk drive and a VLSI VS1002d MP3 Decoder IC driving amplified
PC speakers.  See
http://www.sparkfun.com/commerce/advanced_search_result.php?keywords=vs1002&x=0&y=0
for the decoder.  My guess is that, in quantity, the price for the
decoder is much lower.

It certainly saves a lot of effort and delivers better results if you
just use a chip that has already been designed.

Richard.