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Channel operating margin (COM) is a well-documented IEEE standard that has been used successfully since 2014 in the design of channels and specification of interconnect. In this article, Rich Mellitz reflects on the COM origin story and considers the future of the standard.
As insatiable data needs continue to grow due to artificial intelligence demands, the adoption of PAM4 standard has paved the way for future PAM-level encoding schemes to address future bandwidth limitations, prolonging the life of copper interconnects.
Samtec has announced availability of its NovaRay cable assemblies that combine extreme density and performance by using 40% less space than traditional arrays to support 112 Gbps PAM4 per channel.
Semiconductor signal conditioning and signal recovery innovations have extended data rates by managing allowable signal-to-noise ratio (SNR) at progressively higher Nyquist frequencies. We have experienced how each successive signaling technology increases the electro-mechanical design resolution needed to address the channel physics while respecting the SNR of the chips. These movements throughout the years have provided a baseline of traditional design goals that lead us to better understand today’s 224 Gbps-PAM4 physical layer requirements.
In preparation for 224 Gb/s and beyond, Samtec engaged in a research project to characterize the transmission performance of emerging PCB material sets. Brandon Gore explores the current state of the art for PCBs and cables, comparing them and assessing the technology gap to fully support the insertion loss performance required for higher data rates.
Portfolio of products designed to support tech leaders, hyperscale data center, and enterprise customers to meet increasing demands of generative AI, ML, 1.6T networking, and other high-speed applications.
In this paper, the signal integrity design challenges of 224Gbps-PAM4 networking system are analyzed, and the key enablement solutions are proposed to meet the end-to-end (E2E) loss budget of ≤ 40 dB.
Recent studies indicate that the industry is nearing the precipice where plated through hole via technology has reached a limit in supporting serial links with 28 GHz Nyquist frequency requirements. At DesignCon2021, a team from the Mayo Clinic presented this paper about their work to extend the “life” of conventional PCB technology.
SIJ recently caught up with Timothy Vang, vice president of marketing and applications for Semtech’s Signal Integrity Products Group about the company’s latest product for 50Gbps PAM4 5G front haul deployments, how signal integrity and RF/wireless design overlap, and what is next for the team at Semtech.
