Every Tuesday, Shifting Perspectives explores issues affecting druids and those who group with them, brought to you by David Bowers and Dan O'Halloran. Macros used to be a very mysterious thing, ...

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, ...

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 ...

Level shifter logic specification: Rules to ensure requirement for insertion of special cells when signals traverse between blocks of different supply voltage and also specify the correct type of cell ...