Author Topic: Board to board connector  (Read 1266 times)

0 Members and 1 Guest are viewing this topic.

Offline fagiano

  • Regular Contributor
  • *
  • Posts: 61
  • Country: it
Board to board connector
« on: October 08, 2013, 05:09:05 pm »
Hi, I have too choose a connector to link 2 boards together, the signals will be 3.3V logic at no more than 150/200Mhz, is it ok to just use an 2.54mm IDC connector or I should be looking at something more exotic? Are ribbon cables an ok at this speeds? :-//

thank you in advance

ciao
Alberto
 

Offline marshallh

  • Supporter
  • ****
  • Posts: 1462
  • Country: us
    • retroactive
Re: Board to board connector
« Reply #1 on: October 08, 2013, 07:02:51 pm »
How many signals? Single ended or diff pairs? How long is the distance, can you make them overlap within 2cm?
Ye olde pin header cables are not really a good fit at this speed.
Also important are return paths (every other conductor is ground e.g. ATA-100) and termination.
Verilog tips
BGA soldering intro

11:37 <@ktemkin> c4757p: marshall has transcended communications media
11:37 <@ktemkin> He speaks protocols directly.
 

Offline fagiano

  • Regular Contributor
  • *
  • Posts: 61
  • Country: it
Re: Board to board connector
« Reply #2 on: October 09, 2013, 04:08:51 pm »
I have ~30 signals plus power, no differential pairs. I can skip the ribbon cable and do a board to board connection. I was just wondering if a cable would work. It's a little bit easier to move it around the bench but is not essential if it ends up being too much trouble.

thank you
Alberto
 

Offline NANDBlog

  • Super Contributor
  • ***
  • Posts: 4644
  • Country: nl
  • Current job: ATEX certified product design
Re: Board to board connector
« Reply #3 on: October 09, 2013, 05:51:36 pm »
Samtec http://www.samtec.com/ has detailed specifications and measurements in the GHZ+ region for most connectors. Read a bit. I would suggest to use a LOT of GND pins.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf