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Original question:

LMV722 Output swing

LMV722: LMV722 Output swing

SHIGEKI SATO
Prodigy 20 points
Part Number: LMV722

Hello,

There was a similar question on the forum before,

I would like to know the maximum value of VOL under the conditions of VCC+=5V, VCC-=GND, RL=8.3KΩ to 3V, full temp range.

Thank you.

  • 0
    TI__Guru**** 154186 points

    Hello Sato-san, welcome to the e2e forums.

    The 2k Vo specs are closest.

    Using the worst case VOH, VOL of [4.905, 0.135] ; output current was calculated [1.203, -1.183] mA

    The highest current of 8.3k to 3V was calculated [0.241, -0.361] mA

    Then interpolated limits [VOH2, VOL2] were calculated based on [IOH(2), IOL(2)]

    VOH IOH mA IOH2 max VOH2
    4.905 1.203 0.241 4.981
           
    VOL IOL mA IOL2 max VOL2
    0.135 -1.183 -0.361 0.041

    Output swing high 4.981V (tracks VCC 1:1)

    Output swing high 0.041V

    Allow at least 10mV more as margin for non linearity errors.

  • 0 in reply to Ron Michallick
    Prodigy 20 points

    Thank you for your answer.
    Could you tell me how VOL=0.041V was calculated from IOL=0.36mA?

    Thank you.

  • +1 in reply to SHIGEKI SATO
    Prodigy 20 points

    I think I have solved the reason why VOL2=0.041V is calculated.

    This is the proportional calculation below.
    VOL2=(0.361mA×0.135V)/1.183mA=0.041V

    thank you very much.