Hi, what is the input current limit through the input protection stage at the TL074ID Op Amp inputs when the input exceeds the Vcc- and Vcc+ limits either during power cycling or when Vcc+ and Vcc- have reached steady state values of +/-15VDC?

DWest.5 · ‎2022-06-29

Peter BENSCH · ‎2022-06-29

Welcome, @DWest.5, to the community!

there is no limit for such a current given or guaranteed, as footnote 2 of table 1 says:

The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.

You must therefore take precautions to ensure that the input voltage does never exceed the absolute (unsigned) value of the respective supply voltage, which would be the prerequisite for such a current flow.

Does it answer your question?

Regards

/Peter

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View solution in original post

Peter BENSCH · ‎2022-06-29

Welcome, @DWest.5, to the community!

there is no limit for such a current given or guaranteed, as footnote 2 of table 1 says:

The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.

You must therefore take precautions to ensure that the input voltage does never exceed the absolute (unsigned) value of the respective supply voltage, which would be the prerequisite for such a current flow.

Does it answer your question?

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

DWest.5 · ‎2022-06-29

Peter,
Thank you for your reply. Yes, that answers the question.

Peter BENSCH · ‎2022-06-29

Great!

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.