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TLV320AIC3100: shematic review

R.Fukunaga
Expert 2525 points
Part Number: TLV320AIC3100

Tool/software:

Hi all,

My customer is thinking of using this device.

I would like to check the shematic after the HPR terminal. Is there anyone in charge?

I would like to communicate by private message.

Best Regards,

Ryusuke

  • 0
    TI__Mastermind 46705 points

    Hi Ryusuke-san,

    I can check the schematic for you. I have sent you a connection request.

    Best regards,
    Jeff McPherson

  • 0 in reply to Jeff McPherson
    Expert 2525 points

    Hi Jeff,

    Sorry, I couldn't see your private message.

    I have received my customer's consent, so I am sending the circuit diagram in this thread.

    They use TLV320AIC3100 to make the following circuit and connection.

    TLV320AIC3100_HPR terminal - following circuit - earphone jack connector (CN 18 in the figure) - speaker cable - speaker (consumer product)


    Question 1
    ・Does the current circuit have any problem with the specifications of TLV320AIC3100?]

    Question 2
    ・I would like to change the circuit as follows, but does it have any problem with the specifications?

    Best Regards,

    Ryusuke

  • 0 in reply to R.Fukunaga
    TI__Mastermind 46705 points

    Hi Ryusuke-san,

    This connection looks supported. This is for a mono headset correct? Your changes make the schematic easier to read, though it is not totally necessary to duplicate the AC coupling cap and R divider on both connections. You could still have a single path and short the tip and ring connector at the jack, prior to the protection diodes.

    Best regards,
    Jeff McPherson

  • 0 in reply to Jeff McPherson
    Expert 2525 points

    Hi Jeff,

    The application is a product that sounds by connecting an audio cable to a speaker with a jack.

    The first circuit sounds if it is a stereo cable, but it does not sound if it is a monaural cable.

    Therefore, we are considering improving the second circuit.

    Best Regards,

    Ryusuke