The modules described in this application note can be used as stand-alone multiplexers for both NTSC/PAL broadcast and any HDTV format applications. In addition, by virtue of their size, their performance and the SIP pin outs, they may be used to form larger n x m, professional video matrices. Each GX4201 device is a 1x1 video crosspoint characterised by a low distortion, unilateral signal path consisting of emitter followers at the input and output with level shifting circuits in between.
High definition TV places additional requirements on crosspoint performance in video switching systems. These include a wider flat frequency response and better high frequency off isolation and crosstalk performance. In larger routing expandability and repeatability of system parameters fromchannel to channel, become even more important. The modular multiplexers described in this application note take these, as well as other points, into consideration and provide an optimal solution for the video design engineer. The multiplexers are realised using Gennum's GX4201 wideband 1x1 crosspoint IC.
Posted in: Video
