law faking.... with an R2R

[adamus]

I have an R2r remote control preamp (kit from BBP).

I like everything it does, apart from it being linear.

Would it be possible to use a law faking resistor across the output and ground. If so, how do i work out the value.

Currently i have R2r attenuator, going through a buffer (pedja rogic) to lower the output impendance.

Advice welcome.

 

[bbp]

I have an R2r remote control preamp (kit from BBP).

I like everything it does, apart from it being linear.

Would it be possible to use a law faking resistor across the output and ground. If so, how do i work out the value.

Currently i have R2r attenuator, going through a buffer (pedja rogic) to lower the output impendance.

Advice welcome.

Hi buddy, R-2R can be configurate to log type too, but more steps is needed.
As I know, 65535 steps may be fine, 4096 steps is OK
with 65535 steps, I made 1dB/step attenuation

Maybe you can refer to my new VOL KIT ^_^
http://www.diyaudio.com/forums/swap-meet/163454-fs-ultimate-attenuator-kit-audio-balanced-single-end.html#post2124574