Mapping Changes in Current to Voltages

[mearvk]

What's the trick to convert changes in current to some voltage equivalent?

50% increase in current --> 50% increase in voltage

Can it be done?

What I'm doing is trying to take a photoresistor and have it act as an analog input on a ADC however the ADC is voltage based. :-\

 

[gnurf]

Transimpedance amplifier:

 

[mearvk]

Thanks gnurf.