Feb 14, 2017 #1 G garimella Full Member level 5 Joined Aug 25, 2011 Messages 260 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 3,276 Why digital pots come with low resolution? Can they not implement R-2R ladder as in DAC to improve their resolution?
Why digital pots come with low resolution? Can they not implement R-2R ladder as in DAC to improve their resolution?
Feb 14, 2017 #2 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,170 Helped 4,868 Reputation 9,757 Reaction score 5,540 Trophy points 1,393 Activity points 168,412 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
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
Feb 14, 2017 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,419 Helped 14,749 Reputation 29,780 Reaction score 14,100 Trophy points 1,393 Location Bochum, Germany Activity points 298,094 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.
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.