Is there any method by which I can convert the output from the Signal conditioner to TRUE differntial ?

Good, that you post this question, because I have prepared a schematic for you:



This is a simple true differential cable driver and reciever, designed for an application having a signal bandwidth of 1...2kHz. Some protection parts were added, means the 4.7nF capacitors and the diodes.
Common mode rejection ratio directly depends on matching tolerances of parts in the reciever! So, at least 1% tolerance parts should be used. 100pF capacitors should be NP0 or polystyrol of less than 5% tolerance.

By the way: What means 'true'?
Signal is transmitted with both polarities, where both amplitudes are equal. Also, source impedance and load impedance is identical. Or by other words, everything is identical, only polarity is different. The glue behind is: If ground of driver side is shifted relative to ground of reciever side, then this results in a superimposing of common mode voltage to both lines. And because all involved impedances (source and load) are identical, this superimposed common mode voltage is also identical. Then, in the reciever, the difference of both lines' signal voltage is built. By this signal voltage doubles, but common mode voltage vanishes!!!!

As a rule of thumb, using 1% parts can cause a mismatch of 4% between both lines, resulting in common mode rejection ratio of better than about 28dB. Using 0.1% parts can cause a mismatch of 0.4% between both lines, resulting in common mode rejection ratio of better than about 48dB.
This can be calculated, if you assume toleranced parts in the most right amplifier stage of schematic, where the most relevant mismatch occurs.

You should use operational amplifiers having low offset voltage, of course. For the reciever you can also use a ready made instrumentation amplifier, where everything is included. Industry offers a lot of them, to suited prices.

Please keep in mind, that there are hundreds of other designs all providing true differential signal handling. You could fill a whole book with them. This simplified schematic above, shall only show, what's going on.

Kai