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CDCLVC1310: The termination for AC couple LVCOMS input

Nick Dai
Expert 4240 points
Part Number: CDCLVC1310

Hi Team,

    Do we need a termination network to bias the input signal to VDD/2 for AC couple LVCOMS input signal? There is already internal bias circuit in PRI/SEC input to VDD/2,but there is the termination network at the input of CDCLVC1310 EVM. 

Best Regards,

Nick Dai

  • 0
    TI__Expert 8865 points
    Hi Nick
    _INN input pin has internal biasing to vdd/2 and _INP has pull down resistor. This is done to avoid noise getting amplified while leaving the pins floating. You will have to bias the pins externally if you use ac-coupling.
    Best regards
    Puneet