This slide will firstly describe the overview of electrical view creation flow of analog & mixed signal circuits including characterization, partition and library creation. Then it will tell what information will be extracted from the target circuits through the Cadence characterization tool - Liberate_AMS, and finally the concrete steps that the liberate_AMS will execute in a characterization part. Then an example of how to characterize an analog circuit with Liberate_AMS will be given. The target application is a gephy analog circuit in FinFET, as FinFET process has been widely proposed. The circuits should be simplified and extracted to the extent the circuit structure information will not lose, and also the simulation speed can be guaranteed.