ODP: quantizer question

[Roman Sowa]

Some converters (12 bit nad more) are, as they call it, laser-trimmed
before haused in packages. Some, but few, can auto-calibrate.
And they are not so noisy, as you suggest.

But i really don't want to start any war at DAC field. 

If your'e satisfied with your DACs, go for them.
As for me - in my midi2cv i'll use 16-bits DAC for 2 reasons:
1. it's affordable - about $10
2. i'll have wide range and precsion, plus pithbender

Roman

> -----Oryginalna wiadomość-----
> Od:	Fraser, Colin J [SMTP:Colin.Fraser at scottishpower.plc.uk]
> Wysłano:	31 sierpnia 1998 17:29
> Do:	Synth-DIY
> Temat:	RE: quantizer question
> 
> I don't see how a R-2R network can't be fabricated on a chip with
> close
> tolerance resistances, regardless of how many bits there are.
> Obviously as you increase the number of bits for a given supply
> voltage,
> the voltage level of the lower bits will get lost in noise.
>  
> > If you had no problem with 8 bit DACs, then maybe you were lucky
> > and got a better piece, or used it as a 6 or 5 bit converter.
> 
> I've used half a dozen 8 bit dacs in these applications, some with 7
> bits used, some with 8, and never had any problem with tuning of
> oscillators driven by them.
> 
> What order of error would you suggest I should be getting ?
> 
> 
> Colin f