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TL074CD electrical characteristic missing ;(

Thomas LE BIVIC
Intellectual 510 points
Other Parts Discussed in Thread: TL074

Hi all,

Have someone any idea of the maximum current that can be drawn from a TL074CD (Iout) ?

I've seen that Icc = 2.5mA (http://www.ti.com/lit/ds/slos080j/slos080j.pdf)  but it's probably only for the supply of the component itself right ?

Any help would be appreciated.

Have a good day.

  • 0
    TI__Genius 12325 points

    Hi Thomas,

    Although this product is now supported by our Standard Linear and Logic group I may be able to provide some insight. What I did was pull data points from the output voltage swing vs. load resistance graph in the datasheet:

    and I divided each output voltage amplitude by the load resistance to give me the output current. The resulting graph of output voltage swing versus output current is shown below:

    From this data it looks like the maximum output current is about 33mA (peak, 23.3 mA rms) and the opamp will be able to swing +/-6V (12Vpp) while delivering this much current. I should also note that this is for each opamp inside the TL074.

    Hope this helps!

  • 0 in reply to John Caldwell
    Intellectual 510 points

    Woah !

    I didn't expect such an investigation ^^ It helps a lot !! I found a spice model of a TL074 and the simulation gave me a Max output current of about 25mA.

    Your work is enough to confirm this order of magnitude so THANK YOU VERY BEAUCOUP ;)