The PDM route to mixed signal IC design

Whilst the digital ASIC has benefitted enormously from advances in simulation and verification tools, similar improvements for mixed signal ASICs have not been forthcoming. To address this problem Plessey have introduced the Plessey Design modelling System PDM. PDM essentially consists of a reconfigurable logic module, analog design tablet, and a PC or workstation. These are used in conjugation with a selection of analog kit parts to allow the user to build an accurate hardware replica of the system to be integrated. The operation of PDM and the advantages of adopting it as a route to mixed signal ASIC design are illustrated by considering a typical mixed signal integration