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LME49710HABD: LME49713 pin1 and pin8 No Connect - are these true NCs?

Javier Galvan
Prodigy 10 points
Part Number: LME49710HABD
Other Parts Discussed in Thread: LM4562

I bought several LME49713 in the TO-99 case.  Pin 1 and Pin 8 are shown as NCs, and I want to use pin 1 to shorten the feedback path to pin 2.  The datasheet never listed if it was a true NC and I would like to get that verified before I commit to getting boards built.  While chatting with an engineer on an audio forum, he did some research but couldn't come up with a conclusive answer to help me out.

  • 0
    TI__Guru** 110715 points

    Hi Javier,

    Welcome to e2e.

    LME49710 and LME49713 are no longer available and thus not supported.
    I would suggest to be safe and leave them floating. NC can mean two things:

    • Not internally connected
    • Do not connect

    By leaving them floating you can be safe that these pins will not affect its functionality.

    For a supported replacement, you can consider LM4562, although it is a dual op amp instead of single.

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