Thanks everyone for the digital pot recommendations.  FYI
I tried the CS3310, works great, got an A weighted SNR
of 120 dB, < .0004%THD+N!

Thanks,

Robert Zeff
Nikola Engineering
209-599-1989
rzeff@nikola.com
Free Spice for Windows NT / Win95:
WWW:  http://Nikola.com


On Thursday, May 01, 1997 4:43 PM, Mike Ghormley [SMTP:mikeg@BLACKSAND.COM]
 wrote:
> There is a Stereo Digital Volume Control made by Crystal (really Cirrus
> Logic).  It is the CS3310.  It has:
>         127dB (!) of range
>                 95.5dB of attenuation
>                 31.5dB of gain
>                 0.5dB steps.
>         0.001% TDH
>         3-wire 16-bit interface
>         Operates from +/-5V.
>         Outputs can drive a 600 ohm load.
>         Input/output is only +/- 3.75V.
>
> Don't know how pricey it is.  A spec sheet is available at:
>
>         http://www.cirrus.com/prodtech/ov.crystal/cs3310.html
>
> Hope it helps.
>
> Michael
>
> When the way of the Tao is forgotten, kindness and ethics must be taught.
> Men must learn to pretend to be wise and good.  --  Lao Tzu
>