Tool/software:
Good Morning/Afternoon
Thanks for your support until now.
I need to know if it is possible to use XTR to 4-20mA if negative supply is placed at GND.
Can we operate with only one power supply i.e. VCC+ = +12VDC and VCC- = 0 to get output 4 to 20 mA?
In the datasheet
https://www.ti.com/lit/ds/symlink/xtr305.pdf
it is said at page 22
"The XTR305 can be used with asymmetric supply voltages; however, the minimum negative supply voltage must be equal to or more negative than −3 V (typically −5 V)."
This supply value ensures proper control of 0 V and 0 mA with wire resistance, ground offsets, and noise added to the output. For positive output signals, the current requirement from this negative voltage source is less than 5 mA.
If we limit ouself to 4-20 mA positive is it still necessary a negative voltage power supply?
It is not clear to me.
Thanks for your support.
Best Regards,
Sergio
