bad precision pot?

Martin Czech martin.czech at intermetall.de
Wed Aug 11 09:13:49 CEST 1999


:::What about a digital pot like the Analog Devices AD5220?
:::Check out http://products.analog.com/products/info.asp?product=AD5220
:::10k, 50k, or 100k w/ increment/decrement count, 128 positions and powerup
:::centering.
:::Would this be an interesting chip to replace some pots?

Well, it was mainly about trimmers, that would be costly...  OTOH these
electronic pots sure have artefacts, noise, control speakthrough, drift
etc. etc. And you would need a up/down switch, it would take some time
to do a 0%-100% move, I don't like this idea.

m.c.




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