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27 November 2024 Research on the method for matching the design of high-speed LVDS driver with transmission lines for CMOS image sensor
Hongbo Bu, Gengyun Wang, Ganlin Cheng, Xu Zhang, Ben Fan, Liqun Dai, Ruimeng Zhang
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Proceedings Volume 13236, Optoelectronic Devices and Integration XIII; 132360N (2024) https://doi.org/10.1117/12.3040829
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China
Abstract
In the field of CMOS image sensors research, the design and application of Low-Voltage Differential Signaling (LVDS) drivers are key to achieving efficient video signal transmission. As the frequency of LVDS signals continues to increase, issues of signal loss and attenuation during long-distance cable transmission have become more prominent, posing greater challenges to the performance stability of LVDS drivers. This paper establishes a model for CMOS image sensor LVDS drivers and transmission lines, detailing the attenuation mechanisms of LVDS transmission lines and their impact on differential signal transmission. The study focuses on methods for matching the design of LVDS drivers with transmission line characteristics, while also analyzing the interaction mechanisms between the operating states of MOS transistors in the circuit and key variables of the RLGC transmission line model. Using 1Gbps LVDS data and a 20cm flexible transmission ribbon cable as an example, the effectiveness of the matching method was validated through simulation experiments. This method provides technical support for the reliable design of high-speed LVDS drivers in image sensors or other chips, and offers useful references for the engineering selection of LVDS high-frequency transmission lines.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Hongbo Bu, Gengyun Wang, Ganlin Cheng, Xu Zhang, Ben Fan, Liqun Dai, and Ruimeng Zhang "Research on the method for matching the design of high-speed LVDS driver with transmission lines for CMOS image sensor", Proc. SPIE 13236, Optoelectronic Devices and Integration XIII, 132360N (27 November 2024); https://doi.org/10.1117/12.3040829
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KEYWORDS
Signal attenuation
CMOS sensors
Design
Dielectrics
Resistance
Data transmission
Transistors
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