Generating printed circuit board (PCB) layout with care can compensate for or even prevent significant deviation from desired impedance of HDMI. This application note serves as a layout guideline, discussing general PCB knowledge—including knowledge of PCB prepreg selection, critical signal trace length, and microstrip stub effect—and impedance control on four-layer PCBs of 1080+2116 prepreg.
Pericom Semiconductor designs, develops, and markets high-performance interface ICs for the transfer, routing, and timing of high-speed digital and analog signals within and between computer, networking, and multimedia systems.
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