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LMH1208: LMH1208

user4759499
Prodigy 20 points
Part Number: LMH1208
Other Parts Discussed in Thread: LMH1219, LMH1218, , TPS564201

We use LMH1218/LMH1208 Caber driver, the output signal cannot be recognized by LMH1219(The product we designed, can normally receive other 12G SDI signals),

Could you please analyze whether there is anything unreasonable about PCB or schematic diagram? Thanks!

Power supply use DC DC TPS564201.

  • 0
    TI__Guru* 93570 points

    Greetings,

    I am assuming this is 12G SDI signal? Do you have a scope shot of the LMH1208 75-ohm output?

    Please note LMH1208 SLEW_CTRL should match data rate. Is this taken care of ?

    I also noticed you are using closely coupled differential traces on LMH1208 75-ohm outputs. When you are running this test, are both outputs used? Or are you terminating un-used 75-ohm output?

    Regards,, Nasser