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LMV393-N: What happens when Input voltage goes above Vcm?

Fabio Posser
Prodigy 245 points
Part Number: LMV393-N


Tool/software:

Hi, what is the behavior with the input pin when the Vcm goes above 2V?

It will clamp the voltage of the input will be still high impedance?

LMV393MM-NOPB


  • 0
    Guru 318050 points

    The inputs are the bases of PNP transistors (see section 7.2), so no current will flow. The absolute maximum ratings allows voltages up to 5.5 V.

  • +1
    TI__Guru 62126 points

    Hi Fabio,

    Since the Abs Max states an absolute 5.5V, there is not a upper ESD clamp.

    So it should remain high impedance up until 5.5V, then you get into the range where there could be a breakdown at a higher voltage (No, we do not comment on that breakdown voltage as it is way out of DS specs).

    At about 800mV below V+, the bias current will start to drop into the pA's as the input stage gets cut off.