I am using the XTR115 (ex Burr Brown now Texas) already to provide 4 - 20 mA loop supply to sensors but they no longer do a cost effective I/V. Like I said, my problem is with the dual supply opamp ciruits - I do not have a negative supply and cannot find single supply opamp examples.
I am using the XTR115 (ex Burr Brown now Texas) already to provide 4 - 20 mA loop supply to sensors but they no longer do a cost effective I/V. Like I said, my problem is with the dual supply opamp ciruits - I do not have a negative supply and cannot find single supply opamp examples.
Russlk's circuit should do the trick. To go along with the theme of this thread, here's another circuit that might be of interest. It performs the opposite function (converts an 0-1V input voltage to a 4-20mA current using a single supply).