nmos1.sp – DC sweeps of an NMOS transistor

 

UA741_model.spsubcircuit macromodel, providing a realistic model of a uA741 op-amp, built with mostly simple linear elements to speed the computation.  The input diff pair uses a simple NPN model.  Ideal diodes set various limits.

 

UA741_Inverter.sp – AC analysis of an inverting amplifier using the macro model.

 

UA741_UnityGain.sp – Transient analysis with the macro model used in a unity-gain configuration.