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AD623 SPICE MODEL PROPLEM

Question asked by Giacomo on Aug 27, 2014
Latest reply on Aug 29, 2014 by krisf

Hi!

 

I'm new, I'd like to share with you a problem with AD623 spice model simulation.

I need to use this OPA for PT100 circuit but first I have to be sure that AD623 spice model (downloaded from AD web site) is correct.

My simulation (with Altium Designer) don't works correctly.

I post you a photo of the circuit and its simulation result.

 

Circuit.pngSimulation.png

Without resistor's gain I expect to the output just the difference between V+ and V- (GAIN=1).

Which is my error?

 

Thank you,

Giacomo

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