Abstract
The accuracy of Power-Supply-Induced Jitter (PSIJ) simulation in Input/Output Buffer Information Specification (IBIS) models is critical for ensuring robust high-speed signal integrity analysis, but it lacks accuracy in predicting the PSIJ when the pre-driver exists in the model. Previous studies have proposed methods to improve IBIS PSIJ simulation accuracy with pre-driver effect included in the IBIS switching coefficients modification process. However, these methods fail to accurately model the output waveform slew rate change with varied power noise. In this work, an improved modification method was proposed to incorporate power-aware characteristics into the modified IBIS model, thereby improving the accuracy of slew rate prediction. The method builds upon prior approaches by introducing the ratio modification and time correction steps to address both jitter and output slew rate inaccuracies. The model validation was conducted under power supply DC noise, single-frequency and multi-frequency AC noise. Simulation results validate the effectiveness of the proposed method, showing significant improvements in both timing accuracy and slew rate modeling.
Recommended Citation
Y. Ding and C. Hwang, "IBIS Model Simulation Accuracy Improvement with Slew Rate Correction," IEEE International Symposium on Electromagnetic Compatibility, pp. 233 - 238, Institute of Electrical and Electronics Engineers, Jan 2025.
The definitive version is available at https://doi.org/10.1109/EMCSIPI52291.2025.11170148
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
input/output buffer information specification (IBIS) model; jitter sensitivity; power supply induced jitter (PSIJ); slew rate; switching coefficient
International Standard Serial Number (ISSN)
2158-1118; 1077-4076
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2025
