How can a digital to analogue converter be designed to produce a squared output?

[simba9071]

How can you design a digital to analogue converter such that it has a squared output. i.e. the analog equivalent of the digital step is smaller at the lower voltage levels than at the higher voltage levels

 

[alxm]

I guess you could use an ordinary DAC together with an Op-Amp. Or, if it's good enough for your purposes, you could build a simple resistor-ladder DAC and change the values of the resistors accordingly.

 

[cosmik debris]

You can do the multiply at either the digital or analogue side of the convertor, preferably the digital side.