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介绍了一种宽频带低串扰视频切换矩阵的设计。该矩阵采用美国ADI公司的AD8108作为宽频带视频切换矩阵的信号切换芯片,采用AT89C51作为微控制器完成矩阵切换的控制和外围界面的维护。实现的视频切换矩阵具有325MHz的带宽能力和低通道间串扰、低进出串扰的特性,同时具有-98dB的高进出隔离度,完全可以满足各行业中对高性能视频和VGA信号的切换需求。
This paper introduces the design of a wideband low crosstalk video switching matrix. The matrix AD8108 US ADI company as a broadband video switching matrix signal switching chips, using AT89C51 as a microcontroller to complete the matrix switching control and peripheral interface maintenance. With a bandwidth of 325MHz and crosstalk between channels, low crosstalk and crosstalk characteristics, the video switching matrix achieves high-out-of-isolation of -98dB and fully meets the switching needs of high-performance video and VGA signals in various industries.