{"id":16893,"date":"2025-04-09T03:43:56","date_gmt":"2025-04-09T03:43:56","guid":{"rendered":"https:\/\/www.fibermall.com\/blog\/?p=16893"},"modified":"2025-04-10T07:05:37","modified_gmt":"2025-04-10T07:05:37","slug":"direct-integration-of-a-bare-die-dsp-in-800g-aec","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/bare-dsp-800g-aec.htm","title":{"rendered":"Direct Integration of a Bare-Die DSP in 800G AEC"},"content":{"rendered":"\n

Introduced the world’s first 800G active cable (AEC) product with a barebone digital signal processor (DSP) at DesignCon 2025. Scheduled for a Q4 2024 release, this breakthrough innovation removes the conventional packaging layer of the DSP chip. Instead, the DSP\u2019s bare die is directly embedded into the cable assembly using Chip on Board (COB) and mSAP processes.<\/p>\n\n\n\n

\"OSFP<\/figure>\n\n\n\n

This novel design eliminates traditional packaging and intermediary layers. Through meticulously optimized pin mapping, state-of-the-art packaging techniques, a well-considered layout configuration, and refined termination of conductors, the design significantly enhances signal integrity. Moreover, the integration of the bare die delivers a marked improvement in thermal performance. Unlike conventional packaged DSPs, which often suffer from poor heat dissipation due to structural limitations and are prone to overheating, thereby jeopardizing component lifespan and performance, the bare-die approach permits the direct application of thermal interface material (TIM) and heat sinks on the chip surface. This direct integration substantially improves thermal efficiency, effectively addresses heat dissipation challenges, and ensures stable performance even during high-speed operation.<\/p>\n\n\n\n

\"112G<\/figure>\n\n\n\n

Notably, the technology is forward-looking and compatible with 224G solutions, making it suitable for various wiring applications in both optical communications and active copper cables. This universality underscores its strong versatility.<\/p>\n\n\n\n

In this design, COB and mSAP technologies play critical roles. COB technology involves directly mounting and bonding the bare semiconductor chip onto a printed circuit board (PCB), thereby shortening interconnect paths, reducing physical footprint, enhancing signal integrity, and lowering production costs. Conversely, mSAP technology focuses on achieving extremely fine trace widths and spacings, enabling the fabrication of high-precision circuit patterns that improve the electrical performance of the PCB. Together, these technologies establish a robust foundation for the miniaturization and enhanced performance of advanced electronic devices.<\/p>\n\n\n\n

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