AD8420 and LTSpice simulation

lijie on Jul 22, 2020

Dear team,
I used LTSpice to simulate the 4-20mA receiver of CN-0314, and the simulation results were wrong. Don't know the reason.
Please point out the error, thank you.

sim_LTSPICE.rar

0 Fdelaram

on Jul 27, 2020 12:57 AM over 1 year ago
Hi,

The fault in your circuit is that, you have tied your R4 to your REF pin.
The REF pin and the other end of R4 should be on GND.
So to modify your circuit, just connect the R4 and REF pin node to GND.

Please see modified circuit below.

Thanks ad regards.
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