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LM48821 application question

Chen Bogey8
Mastermind 9990 points

Other Parts Discussed in Thread: LM48821, TPA6132A2

Dear Sir

Good days,

May we disable LM48821 I2C control function?

Here customer requrest differential input 50mW output headphone amplifier. but customer want I2C control.

So we want check if LM48821 I2C control can disable? if yes, "SCL/SDA/I2CVdd" how to connect.

or may we have other suggestion.

                                                Best regards,

                                                                Bogey

  • 0
    TI__Guru**** 189401 points

    Hi, Chen,

    It's good to hear from you!

    I don't believe you can disable the I2C interface. I don't see the default values in the d/s, but many of our parts power up in MUTE to prevent pops and clicks at power-up, so you have to take them out of MUTE via I2C before they can play audio.

    I would suggest the TPA6132A2 instead. It does not have an I2C requirement.

    -d2