Broadcom's DSP PHYs Boost AI Infrastructure with Low Power Consumption

2025-03-28 smart

San Jose, Friday, 28 March 2025.
Broadcom’s new DSP PHYs offer the industry’s lowest power consumption for 800G, integrating VCSEL drivers to enhance AI infrastructure efficiency in Europe’s data centers.

Groundbreaking Technology Advancement

On March 25, 2025, Broadcom unveiled its revolutionary Sian3 and Sian2M DSP PHYs, marking a significant advancement in AI infrastructure technology [1]. The Sian3, manufactured using cutting-edge 3nm process technology, delivers over 20% power reduction for 1.6T optical modules, while the Sian2M introduces the industry’s first 200G/lane DSP with integrated VCSEL drivers [2][3].

Technical Specifications and Performance

The BCM83628-DIE, part of the Sian3 family, features a monolithic 3nm CMOS transceiver PHY with 8 x 200-G PAM-4 SerDes lanes, achieving an impressive 1.6 Tbps throughput [4]. The system supports both 212.5 Gb/s and 226.875 Gb/s line-side signaling capabilities, with integrated laser drivers specifically designed for EML and SiPh optics [4]. Broadcom’s proven track record is evidenced by their deployment of over 50 million channels of 100G VCSELs in AI networks [1].

Market Impact and Future Projections

Industry analysts project significant growth in the sector, with LightCounting forecasting that by 2028, 1.6T optical transceivers will consume more than $1 billion worth of PAM4 DSPs [1]. The technology’s commercial viability is further strengthened by Broadcom’s production timeline, with the Sian3 scheduled to begin full-scale production in Q3 2025 [4]. The company’s ambitious power consumption targets aim to reduce current levels from 28 watts to below 20 watts by next year for 1.6 Tbps solutions [4].

Industry Implementation

The innovation has already garnered support from industry leaders. As Richard Huang, CEO of Eoptolink Technology, notes: ‘Integrating Broadcom’s Sian3 and Sian2M into our transceivers allows us to deliver industry-leading performance with significant cost and power savings’ [1]. The technology’s integration capabilities demonstrate remarkable versatility, supporting IEEE 802.3dj, InfiniBand, and various Ethernet standards [5].

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AI Infrastructure DSP PHYs