TPA2006D1: white noise hearable through speaker

Cindy Chang

Part Number: TPA2006D1

Hi team,

We found that there's a hearable noise (spectrum from 200Hz to 20kHz) through speaker even we didn't give any input source.

Even if we remove C36 and C37 (open circuit) and use battery for 4.2V power, the noise still exist.

Could you please help to give some advice of removing this noise?

Thank you.

Best Regards,

CIndy

over 3 years ago

0 Luis Fernando Rodriguez S. over 3 years ago

TI__Guru* 84915 points

Hi, Cindy,

Does the audio amplifier share the power supply and GND with other components? Could you fully isolate the amplifier from other components on the board? I mean, could you use an independent supply for the TPA2006D1? Or remove/disable the rest of components of the board?

Have you also tried with another speaker load?

In addition, have you monitored all the TPA2006D1 pins in order to see if there's noise present?

Best regards,
Luis Fernando Rodríguez S.

0 Luis Fernando Rodriguez S. over 3 years ago in reply to Luis Fernando Rodriguez S.

TI__Guru* 84915 points

Hi, Cindy,

Let me know if you have a feedback about my previous response.

Thank you.

Best regards,
Luis Fernando Rodríguez S.

0 Cindy Chang over 3 years ago in reply to Luis Fernando Rodriguez S.

TI__Intellectual 2475 points

Hi Luis,

I'll collect these information from customer and get back to you.

Thank you.

Best Regards,

Cindy

0 Luis Fernando Rodriguez S. over 3 years ago in reply to Cindy Chang

TI__Guru* 84915 points

Thank you, Cindy!

I will be waiting for your response.

Best regards,
Luis Fernando Rodríguez S.

0 Luis Fernando Rodriguez S. over 3 years ago in reply to Luis Fernando Rodriguez S.

TI__Guru* 84915 points

Hi, Cindy,

I will close this e2e thread for now. But please feel free to post any additional information you get. We will be glad to help you.

Best regards,
Luis Fernando Rodríguez S.

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.

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TPA2006D1: white noise hearable through speaker