cocopa

Hi, I've just starting studying about LVDS signals and i got a little confused.. When we say they are referenced to each other does it mean that ground return path is not needed? For example, i want to transfer an LVDS signal from one pcb to another through a cable, a twisted pair is enough? Or do i need an extra wire for ground connection?

Hi everyone,i want to make a programmable current source/sink (source or sink depending on a digital signal) but i am a beginner and i don't have a clue...It has to provide 0-10uA,10 bits resolution,can anyone help???