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I am looking for a spice macromodel for the LM3900, Norton Operational amplifier, I Know that it is manufactured by TI, National & Motorola, but the spice libraries show no sign of it.
The Motorola cross reference for the part is the MC3401 The LM2900 is also a similar part with a different temperature spec (Motorola X-ref MC3301), This would do just as well for spice modelling.