Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
why do you want to transform your LVDS-signals? - Normally there is
no galvanic isolation!
If you really need an isolation a 'standard' Ethernet transformator (even
a 100MBit one) can not be used. The frequencies on LVDS can be much
higher and the impedance does not mach.
A better (but expensive) solution would be to make a galvanic isolation
before the LVDS driver/receiver and to supply them with a DC/DC
converter.
Again: normally you do not use a transformer on LVDS line, even if it's
possible (in some circumstances). So if you don't have a big reason
(common mode problems, using coax-cables) you should use a direct
coupled LVDS.
In the case of such low bitrates as you wrote (below 100MBit/s) I think you
could try it with an 100MBit Ethernet transformer. The missmatch in
termination won't be very critical.
For further information look at the national homepage, they have a lot
of design rules for LVDS lines.
Hi Kobik,
if you need a fast interface circuit to convert LVSD input signal to standard CMOS, I can provide a circuit topology based on 3 bjt you can easily check on spice.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
