Title :
Analysis of differential termination technique in cascading of high speed LVDS signals on a PCB
Author :
Chowdhury, Debopriyo ; Goswami, Bhaskar ; Mantri, Rajiv
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kharagpur, India
Abstract :
This paper addresses the issues in the cascading of high-speed low voltage differential signals (LVDS) on a PCB, and suggests measures for prevention of noisy reflection. The concept of differential termination, for single as well as multiple LVDS drivers on a cascaded board, has been analyzed in depth and solutions provided. The novel idea of dual drive strength or adjustable buffer output current strength in LVDS drivers, to take care of impedance mismatch in cascaded boards, has been introduced. Board simulation results have been presented and discussed.
Keywords :
buffer circuits; driver circuits; impedance matching; low-power electronics; mixed analogue-digital integrated circuits; adjustable buffer output; cascaded board; differential termination technique; dual drive strength; high speed LVDS driver; impedance mismatch; low voltage differential signal; mixed signal PCB; noisy reflection prevention; Biomedical measurements; Impedance; Low voltage; Modems; Resistors; Signal analysis; Switches; Telephony; Testing; Velocity measurement;
Conference_Titel :
India Annual Conference, 2004. Proceedings of the IEEE INDICON 2004. First
Print_ISBN :
0-7803-8909-3
DOI :
10.1109/INDICO.2004.1497821
