> -----Original Message-----
> From: Paul Schreiber [mailto:synth1@...]
> the trend is the opposite: there are insanely DC accurate op amps
> that have
> a max frequency of 15HZ
> (yep, 15 HERTZ). Then you have insane audio parts with 0.0001%
> THD and 95dB
> SNR that drift like a mother
> (because they assume AC coupling of the output).
>
This is probably wildly impractical, but would it be possible to split out
the dc component of the signal, amplify the ac component with the killer
audio opamp, kill off any induced dc component at the audio opamp's output,
then add the original dc component back in?
Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...