how to implement signed magnitude R2R ladder

Status
Not open for further replies.
how to make the Zero crossing point reference voltage?
If its 24bit which in general accommodate the entire wave from peak to peak but in signed magnitude its not required. So how do we make the signed magnitude with may be 12 bit R2R ladder
 
actually sorens dac has got 28 plus 28 for the positive wave and 28 plus 28 for the negative wave so why 28 are used for positive if so one need 1 / 2^28 precise resistor which is not that case.. so how is 0.05% is working without any issues.
 
Status
Not open for further replies.