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LMH6624: NC pin

Shuji Ishiwata
Mastermind 8920 points

Part Number: LMH6624

Tool/software:

Hi All,


I have a question about the NC terminal of the LMH6624.

Is it okay to apply a voltage to the NC terminal?

If it's not connected internally, I don't think there's a problem.

The reason I want to apply a voltage to the NC terminal is because I'm changing from another company's op amp to the LMH6624, but want to replace it without changing the AW.


Best Regards,
Ishiwata

  • 0
    TI__Expert 3536 points

    Hi Ishiwata,

    The pins are not connected internally. While I cannot outright recommend connecting signals to NC pins on our devices, I can help you make an informed decision if considering doing so. Each NC pin, as this is an SOIC-8 package, is connected to an internal portion of the pin/leg inside the package as it would for a normal 8-pin IC. This portion of the pin/metal is not bonded (via wire) to the IC die for these three NC pins. The five signal pads on the die are bonded out to the lead frame pins.
    As the die is not wire-bonded or electrically connected to either of the three NC pads, which are themselves isolated from one another, the NC pins are not part of any circuitry on the die.
    You may take this information and make your own decision about what is best practice of connecting or not connecting NC or NIC (not internally connected) pins. In the case of the LMH6624, these NC pins are not internally connected. TI's stance is to leave NC pins not connected.

    Thanks
    Vikas J