[sdiy] dsPICs with DACs: external 16bit?

[Seb Francis]

Michael Zacherl wrote:
> So, more generally spoken: _If I wanted_ more accuracy, would it be 
> reasonable to fit a set of 16bit ADC/DAC on a µC board (Arduino, PIC, 
> ...)?
> I just wondered when these little things hit their limits in respect 
> data handling speed and I/O capabilities.
> Just thinking of smaller apps like delays etc.
>

Interfacing with an external CODEC IC is quite easily and efficiently 
accomplished via the DCI interface.
More of a problem is accessing external RAM which requires lots of I/O 
pins to do efficiently and without extra external components.  So this 
is where you will be pushed towards using surface mount packages.  But 
you pretty much have to go SMT to get any choice of CODEC IC anyway.

This is a little project I did using all of the above:
http://burnit.co.uk/sdiy/index.php?page=4xd

Seb