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Minimizing the temperature dependence of digitally programmable potentiometers

Posted: 28 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:DDP application note? digitally programmable potentiometer? digipots?

The temperature dependence of electronic products can be reduced using a number of different approaches. One approach, for those products where it is possible, is to use a closed-loop, feedback system to calibrate the product�s electronics before any measurement or signal processing activity is initiated. The calibration procedure can correct for any internal changes due to temperature or other environmental factors. A second approach is to use low temperature dependent components at the circuits? level. A third approach is to use a circuit topology whose performance with temperature is shifted from high TC parameters to low TC parameters. This application note by Chuck Wojslaw for Catalyst will look at the latter two approaches.

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