2 Replies Latest reply on Jan 6, 2012 4:53 PM by weston_beal

    Simulation with BGA socket

    aarun

      Hi,

       

      In my board I use socket for my BGA chip. To model the socket in hyperlynx simulation, is it enough to have just capacitance and inductance (to represent the loading) for socket?

       

      Also tell me is it correct that changing the pin inductance value in ibis model according to pin inductance of socket?

       

      Thanks,

      Arun

        • 1. Re: Simulation with BGA socket
          yu.yanfeng

          It depends on the data bit rate of your application. If you are dealing with GHz serial chain, you may have to ask a more-detailed model  from the socket vendor.

          It's better and safe that inserting a socket model in the circuit t instead of modifying original IC's IBIS model.

           

          Yanfeng

          • 2. Re: Simulation with BGA socket
            weston_beal

            Assuming that you are working with current technology in the IC I/O buffer, you need a better model of the socket than what you can put in the IBIS file. You need a good simulation model from the socket vendor. It might be possible to make an IBIS PKG (package) model that adequately models the IC package plus socket. Another option is to use an EBD file to describe the socket. I expect that the BGA package is more complex than a simple RLC, too.