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digital pot resolution

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garimella

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Why digital pots come with low resolution? Can they not implement R-2R ladder as in DAC to improve their resolution?
 

Hi,

I don't know. Maybe because of cost, size, power requirement..

If you want a DAC, you are free to use a DAC.

Klaus
 

The primary use of digital pots is for circuits that need a variable resistor or a true potentiometer which doesn't work with R-2R ladder. The resolution is respectively limited by the feasible number of analog switches.
 

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