syedamerali:
You miss the point. No biasing is required for the ads if used in differential mode. Biasing is only required if you are using the ads in single ended mode and measuring with reference to ground.
I understand where you're coming from.
Did you see any common mode range of the inputs mentioned in the datasheet.
I don't know if -0.5volt and +0.5volt is reliably read as 1volt p/p.
Better keep all voltages positive, like in single-ended mode, to be sure.
And reference them to a fixed point, so they are not (DC) floating).
syedamerali:
Increasing the number of turns merely increases the induced voltage in the secondary at no load.
A current transformer transforms current. If there is no primary current, there is no secondary current and no secondary voltage. If you DO have something without primary current, then there is something wrong with your build.
Leo..