• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 30 subscribers
  • Views 648 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PCM1753: Pop Noise issue

ttd
Mastermind 7990 points
Part Number: PCM1753
Other Parts Discussed in Thread: PCM5121, PCM5100A, PCM1774

Dear Technical Suppot Team,

I have an issue of pop noise on PCM1753 when power-on and power-off(on⇒off⇒on⇒off⇒on・・・).

This is old device. Could you tell me recommend devices pop noise is improved ?

Best Regards,

ttd

  • 0
    TI__Guru 57800 points

    Hi, Ttd,

    What is the sequence followed for the power on/off process?. You can try enabling the Soft Mute function to perform a soft transition when muting the part before powering down to avoid pop noise.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer

  • 0 in reply to Diego Melendez
    Mastermind 7990 points
    Dear Diego Meléndez López,

    Thank you for your reply.
    I check PCM5121/22 and PCM5100A/01A/02A.
    These datasheet shows pop-free solution when power-down.
    How is the power on ? Do they avoid pop noise when power on?

    >You can try enabling the Soft Mute function to perform a soft transition when muting the part before powering down to avoid pop noise.
    Thank you for your reply. I'd like to try it before power down.

    Best Regards,
    ttd
  • 0 in reply to ttd
    Mastermind 7990 points
    Dear Diego Meléndez López,

    Sorry I have a mistake of part number.　
    Exact number is PCM1774.

    By the way , Slow power up/down ramp time reduce the pop noise,right?
    If it is yes , do you know the effective ramp up/down time ?

    Best Regards,
    ttd