differential to single ended

[analog_chip]

Hi,

I have to digitise a differential O/P of a subcircuit using dual slope A/D converter. But my dual slope A/D converter i am designing is single ended. How can I convert differential O/P to single ended?

 

[cameo_2007]

are there no Differential to Single ended converters available?

 

[analog_chip]

There are but I do not want any nonlinearity.... i.e. conversion with best possible accuracy..

---------- Post added at 05:14 ---------- Previous post was at 05:06 ----------

Hi,
The signal is not absolute differential with V+ and V- but v1 and v2 and both are >0. I want to digitise v1-v2 which is the o/p of a temperature sensor and i dont want to introduce any nonlinearity. In fact they are Vbe1 and Vbe2 of two BJTs.

NB. I dont want to change the sensor core and modify like a bandgap ref to extract Vbe1 - Vbe2.