Many older linear devices, especially operational amplifiers (op amps) do not have a SPICE macro model. Even when they do, older models typically use a Boyle macro model which, by today’s standards, ...

Designers need macro models that can precisely and accurately predict the behavior of an actual device. Spice macro models have continued to evolve over the past decade, and new models allow users to ...

Many designers have asked why CPF has the macro model commands while UPF/1801 does not. I will try to answer this question and explain the differences in both approaches. First, let’s briefly review ...