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Original question:

LMH0303: LMH0303 to support single end input and , dual single end output

LMH0303: what is the max length between FPGA and LMH0303 can be routed？

lin huang
Prodigy 210 points
Part Number: LMH0303
Other Parts Discussed in Thread: LMH0318

Hi team:

my application is below，the pcb is FR4，my question is ：what is the max length between FPGA and LMH0303 can be routed？

thanks

  • 0
    TI__Guru* 88835 points

    Hi Lin,

    Since LMH0303 does not have FR4 pcb equalizer, we can limit this to 2-ihches or 4cm.

    Another option to consider is using LMH0318. This device has both FR4 equalizer and a retimer as well. One thing to note, when using LMH0318 it would be a good idea to have at least 4-5dB insertion loss between your FPGA and LMH0318 inputs. This is done to make sure there is no over-equalization.

    Regards,,nasser