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OPA140AIDBV Curves

Maxime ATHEE
Prodigy 740 points

Dear team,

My customer would like to have the folllwing curves on the OPA140AIDBV ,

Can you please give me the curve “Large Signal Voltage Gain vs. Load resistance (Ω)” of the OPA140AIDBV ?

And also the curve “output voltage swing vs. load resistance” ?

Thanks in advance for your feedback,

Maxime

  • 0
    TI__Guru 74561 points
    Maxime,
    In the first question, I believe you refer to a variation in open- loop gain, AOL, with output resistance-we don't have a graph to share with you but you may see it in the datasheet table on page 7 for 2k and 10k loads - min AOL of 114dB and 120dB, respectively.
    The output voltage swing to the rail is a function of the output current (not resistance) and it is shown in graph 6 of the datasheet on page 9.
  • 0 in reply to Marek Lis
    TI__Prodigy 740 points

    Hello,

    Thanks for your quick feedback,

    Please find below the clarification from the customer. 

    For the first question: the nominal load is 1kohm. 

    For the second question: the curves are for the max. supply (±18V ?) are the currents higher for min. supply ?

    Thanks for your help,

    Maxime