Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

  • State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 188 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.

LM4861: LM4861 Noise Issues

上海寰创
Prodigy 10 points
Part Number: LM4861

Tool/software:

Hi

I'm using the LM4861 single-ended using the headphone jack for the left channel output. 1.4GHZ_RF close to your device's antenna, the earbuds can hear a distinct sizzling or clicking noise.

Is there a way to fix or reduce the noise.You can also recommend a single-ended output audio amplifier with good EMIRR capabilities.

  • 0
    TI__Guru** 102045 points

    Hi,

    Is there a way you can check where in the signal path the noise is coupling in?
    My concern is that the noise is coupling at the cable itself going to the headphones If the noise is coupled after the amplifier, it won't really matter how good the amplifier is in terms of EMIRR.

    Best regards,
    -Ivan Salazar
    Applications Engineer