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LMP2021: Stability Analysis Question

Ting Ye
Genius 11800 points
Part Number: LMP2021

LMP2021_Stability_2.TSC

  • 0
    Guru 140200 points
    Hi Ting,

    I think it's an artefact of the simulation. Choose C1=10T and L1=10T and the peak disappears. Concretely spoken, the peak is only shifted towards lower frequencies. :-)

    Shall this be an inverting amplifier later in your application? Then I would choose R4=0. Or put a cap in parallel to R4. This will improve stability.

    Kai
  • 0 in reply to kai klaas69
    TI__Genius 11800 points
    Hello Kai,

    Thank you for the prompt reply. I would like to know if the model is correct. Thank you for the advice changing the original purpose of bias current cancellation but actually adding noise resistor to 0-ohm~

    Regards,
    Ting