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LM48511: I'm trying to use the LM48511.

Daesung Kim
Prodigy 20 points
Part Number: LM48511

I am trying to use the LM48511.

I want to connect 8 ohm speakers and maximize the gain.

Looking at the datasheet, I don't know how to tune the gain.

Can you please provide documentation and instructions on how to set the gain?

  • 0
    TI__Prodigy 220 points

    Hi Daesung,

    The audio amplifier gain is set using four external resistors. The instructions are in section 8.2.2.3 in the datasheet. The formula is Avd = 2 * Rf / Rin. In the example diagram below, R6 and R8 are feedback resistors (Rf), and R5 and R7 are input resistors (Rin). Hence, the gain for both channels is 2.





    Hope this helps!

    Best,
    Andrew