Current Loop Transmitter Suggestions

[pjohn]

Hi,
Can you please suggest me various current loop transmitters, please do not suggest XTR115, XTR116 or XTR117. I want to power the external circuitry via the transmitter. Any suggestions will be highly appreciated.

 

[jasonc2]

4mA - 20mA is pretty standard.

How much current do you need? What signal frequencies are you dealing with? What line voltage drop / resistance are you expecting? You need to give more details.

You can easily make a current loop transmitter from op amps, etc.

 

[crutschow]

Don't know why you can't use the XTR series of transmitters but here's a discrete circuit design example.