How to check the stability analysis of completx opamp circuit in Ltspice

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newbie_hs

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I am attaching the simulation file of one of my circuit.It consists of many opamps and BJT's. I know how to check the stability of this circuit(I know it for single opamp circuits).

My input is V3(I_PT100_SET) and output is I_PT100_ACT .
I can see some ringing initially at output .

Can you please help me to check the stability and to compensate it.
 

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  • PT100 - SWEEP_STABI.rar
    1.6 KB · Views: 8

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Your archive is bad, RAR wont open it. Do it again, also do it as zip format, and post them.
 

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Your rar file opened fine in 7zip.
I don't see any design specs. You must have them.
I added test nodes on each output and squeezed the schematic and changed input to a square wave.



The integrator is drifting from DC offset.
 
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