[sdiy] Expo converters, lin log etc.

[Antti Huovilainen]

On Thu, 1 Feb 2007, Eric Brombaugh wrote:

> I've got no experience with delta-sigma ADCs, but the delta-sigma DACs 
> I've used are perfectly capable of generating DC. The big problem you'll 
> have with them is that they're typically designed for audio output 
> levels (~2V p-p), so in order to take advantage of 24-bit resolution you 
> need CV processing circuits that are accurate to 0.1 microvolts (2V /

And if you check the noise levels, you'll see that most have around 100dB 
SNR which is roughly equivalent to 17 bits.

Another problem is that the DC offset is not very accurate since it's 
irrelevant for audio use.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova