Bathtub Extrapolation of IBIS-AMI Timing Jitter

IBIS Algorithmic Modeling Interface (IBIS-AMI) is widely accepted in the industry to model the analog and algorithmic part of a Serializer/Deserializer (SerDes) PHY. The simulation workflow of IBIS-AMI including deterministic jitter (DJ) and random jitter (RJ) effects is introduced. Dual-Dirac model is used to extrapolate the bathtub to obtain the eye width at a low bit error rate (BER), and its accuracy are validated by comparing to the convolution results of DJ and RJ.