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SN65DP159: Can DP159 work at sink side?

Tiger Wang
Expert 1625 points
Part Number: SN65DP159
Other Parts Discussed in Thread: TMDS181

Dear Sir,

Just like the tittle, does the DP159 work at the sink side? I want to use dp159 at source side  and sink side, DP181 is more power consumption than DP159.

Best regards

David 

  • 0
    TI__Guru**** 176571 points

    David

    With HDMI being a DC-coupled, and DP159 input requires to be AC-coupled, you would need 50ohm to 3.3V between the HDMI connector and AC coupling capacitor on the three TMDS Data and Clock lane. So the connection will be

    HDMI Connector --- 50ohm termination to 3.3V --- AC coupling cap --- DP159

    Please note this 50ohm termination to 3.3V will create a double termination network and incoming signal amplitude will be cut in half. So you may need to adjust the signal amplitude to compensate for the amplitude reduction. 

    With TMDS181, you do not need the external 50ohm termination to 3.3V or AC coupling caps.

    Thanks

    David