The design and verification of the analog and mixed-signal functionality in advanced devices is a challenging task. High levels of integration and short time-to-market windows demand a well-planned and organized methodology. This presentation explains how Mentor Graphics has developed the key technologies under its mixed-signal design and verification platform to facilitate such a methodology. The platform allows transparent and efficient combinations of analog/RF descriptions, AMS behavioral models and pure digital descriptions. System-level languages and fast-SPICE technologies are also fully embedded into the platform to complement this most flexible platform.