Re: attenuator

[David Smith <smithd@xxxxxxxx>]

Pawel,

There are hundreds of different "digital potentiometer" chips available to do this.

For example:

Dual 8 bit digital potentiometer ,3 wire serial port, clocked communications.

Accuracy is typically specified in parts/million. Â

You can use them directly on analog audio or use them to set gain of amplifier stage.

Communication software for this is trivial if you can flip a few bits on a computer port.

Dave Smith

On Nov 17, 2011, at 3:40 PM, PaweÅ KuÅmierek wrote:

Dear list,

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I was wondering if you know of any commercialbly availableÂprecise digitally controlled (i.e., repeatable) attenuator with fast and quiet attenuation changing. Preferably, but not necessarily controlled via RS232.

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All suggestions welcome,

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Thank you,

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Pawel Kusmierek