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LM4861: I have query regarding LM4861M/NOPB & LM4876M/NOPB comparison?

Gerald
Genius 9580 points
Part Number: LM4861
Other Parts Discussed in Thread: LM4876

Hi Experts,

We need your advise and confirmation whether both IC (LM4861M/NOPB & LM4876M/NOPB) can be operated in closed/open loop gain? Our customer is driving 1W,8ohm speaker using LM4861M/NOPB currently in his design. Can he replace LM4876M/NOPB, instead of LM4861M/NOPB?

I hope you can help us. Thank you.

Best regards,

Gerald

  • +1
    TI__Guru** 100965 points

    Hi Gerald,

    The internal bias and gain resistors are not the same across these devices, but the overall functionality is still the same. Customer can replace LM4861 with LM4876, just take into consideration that shutdown logic is inverted:

    • LM4861 will enter shutdown when pin 1 = Hi
    • LM4876 will enter shutdown when pin 1 = Lo

    Best regards,
    -Ivan Salazar
    Applications Engineer