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Original question:

PCM5102A: PCM5102A can't export output

LM4871: simulate LM4871M

MEIHAN YANG
Prodigy 10 points
Part Number: LM4871

Tool/software:

I built up the circuit of LM4871M just as typical circuit shown, but the output of LM4871M would always be 5V. How could I solve it?


  • 0
    TI__Guru** 102355 points

    Hi Meihan,

    Our support on simulation models is limited, but I'll add a few comments below:

    • Did you try inverting C3 connection? Positive side to input source signal.
    • You may try adding a resistor load between the outputs instead of just connecting the scope inputs.

    Besst regards,
    -Ivan Salazar
    Applications Engineer

  • 0 in reply to Ivan Salazar
    Prodigy 10 points

    Hi Ivan,

    Thank you for your reply. I found that if I swap the input pins then the circuit work fine.

    It's really strange because now the two pins connections are opposite to the datasheet.

    Kind regards,

    Meihan

  • 0 in reply to MEIHAN YANG
    TI__Guru** 102355 points

    Meihan,

    This may be due to how the model has been described. Unfortunately, there is no EVM available for this device, but a simple PCB could be built to test the actual device.

    Best regards,
    -Ivan Salazar
    Applications Engineer