I am simulating an Chopper stabilized folded cascode opamp. But I am getting som strange behavior at the output. First I am getting unnecessary zoroes in phase plot when I am doing AC analysis but on other machine circuit is showing proper output.
Second I am getting some convergence issues when I am doing PSS and PNOISE analysis. and When I am resimulating the circuit Then it is showing some different results as compare to previous time out put.
Please Help me if any settings problem is there or something else.