An early-EMI analysis method for the LPDDR interface

In this paper, an accurate noise level estimation technique in the design stage for LPDDR system is presented. In order to predict the system performance, the equivalent circuit based simulation model and the input parameter range for the sweep simulation is required. The package and board are modeled by using RLC equivalent circuits. The input parameter range is determined by investigating the characteristics of the existing products. The noise level of the LPDDR system in the mobile platform can be estimated by using equivalent circuit model and input parameters. It is shown that noise level at the input pad of the receiver using the proposed method has a good agreement with S-Parameter based model within less than 8dB.