[sdiy] Static ADC and DAC recommendations?

[cheater cheater]

Hi guys,
I'm looking for a clock-less ADC which will output an 8-wire parallel
bus of continuous signals. My initial thought was to implement a
simple ADC with comparators, but I'm sure there has to be a chip like
that as well. I have been unable to find anything like that, though.

On the DAC front, the idea is to use an r2r DAC, and turn the parallel
signal back to a normal analog signal. The DAC0800 is one option, but
I'm sure there are others, so feel free to suggest anything.

The idea here is to have a box which has an ADC the signal of which
goes straight into a DAC. The two should work without a clock (so you
can e.g. use it in feedback paths), and so that you can process the
separate "bits" just like any other analog signal and see how the DAC
racts to that. Additionally, being able to glitch out the ADC with
too-fast signals is a plus.

Perhaps being able to limit the current to the ADC section or even the
various comparators, you could get things like cross-over distortion
to become more prominent.

It should be interesting to see how the signal degrades when the ADC's
region of normal operation is exited - it shouldn't be aliasing
anymore.

Thanks