The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Design >> High-Speed I/O Design >> ON LVDS TX https://designers-guide.org/forum/YaBB.pl?num=1130299797 Message started by navin_kumar on Oct 25th, 2005, 9:09pm |
Title: ON LVDS TX Post by navin_kumar on Oct 25th, 2005, 9:09pm Hi all i am going to design lvds tx driver i want to know how to model the package,pad and transmission line models for the simulation of the tx buffer please any one give me good sugestions and links |
Title: Re: ON LVDS TX Post by ywguo on Oct 26th, 2005, 7:52pm Hi, Navin, You need get the package model from your package house to simulate accurately. The transmission line model can be extracted using a lumped model. You can choose a lossless transmission line model, too. Since the pad has parasitic capacitance which depends on its layout and ESD design, you'd better simulate with a real pad circuitry. :) Best regards, Yawei |
Title: Re: ON LVDS TX Post by navin_kumar on Oct 28th, 2005, 3:32am Hi ywugo , thabks for the reply ya for the transient simulations we have to see all the model inclusion can u please any good link for those model thnks & regards navin |
Title: Re: ON LVDS TX Post by ywguo on Nov 1st, 2005, 7:58pm Hi, Navin, Please refer to any SPICE or spectre manual for the transmissioni line model. Best regards, Yawei |
Title: Re: ON LVDS TX Post by SATurn on Oct 10th, 2006, 1:24pm I would suggest also to model more accuratly the on-chip (long connections) or off-chip (PCB) transmission lines using ADS or "Polar" softwares. Specially in high-speed applications you must take into account the loss of line or reflections coming from each part. |
Title: Re: ON LVDS TX Post by justdoit on Sep 5th, 2007, 5:57am Hi all , I do have a question on LVDS transmitter design . I am using a common mode feedback circuit to stabilize the output common mode voltage and I want to do the stability analysis for this feedback loop.For that I need to get the pole at the output of the LVDS driver .Can anyone suggest what all the resistances and capacitances that come into play while calculating this pole !!!!! |
The Designer's Guide Community Forum » Powered by YaBB 2.2.2! YaBB © 2000-2008. All Rights Reserved. |