The best match for Sony IMX high-speed MIPI image link: ultra-fine coaxial cable solution

With the continuous improvement of resolution and frame rate of intelligent image and machine vision systems, the output rate of Sony IMX series sensors has easily exceeded Gbps per channel. Under such high bandwidth conditions, traditional FPC and ordinary ribbon cables are difficult to stably bear the high-speed MIPI CSI-2 transmission, while ultra-thin coaxial cables, with their excellent impedance control, shielding performance, and low-loss structure, have become the key components to ensure the stability of the IMX high-speed link.

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Part 1: Challenges brought by IMX high-speed output

MIPI CSI-2 differential link has extremely high requirements for impedance consistency, crosstalk suppression, and electromagnetic interference (EMI) resistance. When data rates reach 2-5Gbps and even higher, FPC often experiences impedance mismatch, inter-line coupling, and increased EMI sensitivity, which easily leads to closed eye diagrams, increased ISI, and rising jitter, causing issues such as screen flickering, screen blinking, or black screens. For high-speed sensors like IMX219, IMX477, and IMX585, relying solely on PCB and FPC is no longer sufficient to ensure signal quality, and higher specification interconnect media are needed to guarantee the stability of high-speed transmission.

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The structure and performance advantages of ultra-fine coaxial beam束

Micro Coax cable uses an independent shielding structure, ensuring each transmission line has a stable characteristic impedance and good isolation, maintaining signal integrity under high bandwidth conditions. Its wire diameter of 0.3~0.8mm is suitable for compact structures and can maintain 50Ω or 100Ω impedance consistency over long-distance transmission, effectively reducing insertion loss and crosstalk. At the same time, the woven shielding layer provides excellent EMI interference resistance, allowing high-speed image data to remain stable in complex environments. The flexible structure makes it suitable for designs with limited space inside modules, meeting various embedded camera equipment usage scenarios.

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III. Application Practice of Harness for IMX Image System

In actual projects, the IMX series cameras often use extremely thin coaxial cable bundles with 2, 4, or 8 lanes, covering a cable length of 10 to 30 cm, and are matched with high-speed connectors such as I-PEX and Hirose. They are widely used in fields such as edge computing platforms like Jetson Orin, autonomous driving vision systems, industrial cameras, smartphones, and AR/VR imaging modules. Verification shows that after using high-quality extremely thin coaxial cable bundles, the MIPI eye diagram margin is significantly improved, jitter is reduced by about 30%, and the image stability under high-speed shooting or high frame rate modes is significantly enhanced.

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In the high-speed MIPI transmission chain of Sony IMX, the extremely fine coaxial cable束 is not only a medium for connecting devices but also a core element determining the integrity of the system signal. Through precise impedance control, low loss structures, and excellent shielding performance, it ensures reliable transmission of high-speed image data and provides stable high-speed interconnection capabilities for machine vision, industrial cameras, and AI image systems.

I amSuzhou Huichengyuan Electronic Technology,Focus on the customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, providing professional interconnection solutions for different scenarios. For inquiries, welcome to contactManager Zhang: 18913228573 (same number on WeChat)。