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LM4562: LM4562 on +/-18V supply?

Part Number: LM4562
Other Parts Discussed in Thread: OPA1611

Hi:

I would like to use the LM4562 on +/-18.2V supply voltage. Is it common for these to work at voltages this high, or do they die at +/-17.1V (looking for test-bench experience).

Thanks,

Dan

  • Hi Dan,

    Welcome to e2e.

    The LM4562 might be able to operate with +/-18.2V as this is not too far from Absolute Maximum Ratings. However we cannot guarantee the device operation and safety under this circumstance.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • Hi Ivan:

    If an op-amp survives initial power up on +/-18.2V regulated, do you think it will have a long and happy live? Think if buying many and if I get a few that work in this circuit, going with them.

    Also, do you think I can use the same power supply voltages for an OPA1611?

    Thank you!

    Dan

  • Hi, Dan,

    Unfortunately, we don't recommend to use this power supply level for the LM4562. Even if an op-amp survives at the initial power-up, the constant exposure to this level may result in a device damage in short or long term. So, we can only ensure that the device will operate correctly in the recommended range (+/- 2.5V to +/-17V).

    Regarding the OPA1611, this device can work under this power range and there won't be risk of damage since the absolute maximum rating for the power supply difference is 40V. There could be some variations in the electrical characteristics since the recommended operating range is maximum 36V, but the device will not be damaged.

    Best regards,
    Luis Fernando Rodríguez S.

  • Luis:

    Thank you for your information.

    Please close the ticket, and thanks!!

    Dan