TAS5611a Question

andres pinto

The integrated makes a sound when the input have a frecuencia higher than 2 kHz, also make the same sound when use more than one ampere coming from the voltage source. The sound makes sound of high frequency when the frequency of the input signal increases.

Is it normal?

thanks.

over 9 years ago

0 user5276421 over 9 years ago

TI__Mastermind 37045 points

Hi, Andres,

I do not understand the question. Can you describe more in detail? Do you mean you hear high freq noise when playing sinewave input? Is the noise from the passive components such as caps and inductors?

reg,

Paul.

0 andres pinto over 9 years ago in reply to user5276421

Prodigy 145 points

Hello Paul C. Chen

Yes, I think that the noise is from a passive component or from the integrated circuit, I make the test of the PCB with a resistive load near to 5.3 ohms.

thanks

Felipe

0 user5276421 over 9 years ago in reply to andres pinto

TI__Mastermind 37045 points

Felipe,

Check out the article below regarding audible noise from ceramic caps.

http://www.eetindia.co.in/STATIC/PDF/201205/EEIOL_2012MAY31_POW_MFG_TA_01.pdf?SOURCES=DOWNLOAD

reg,

Paul.

0 andres pinto over 9 years ago in reply to user5276421

Prodigy 145 points

Paul C. Chen

Thanks, it is very helpful

I will look if the source of noise is for some MLCC, and I will the recommendations. I will post later for tell how I was.

Felipe Pinto

0 andres pinto over 9 years ago in reply to andres pinto

Prodigy 145 points

Hello

I looked if the issue was some capacitor MLCC, but it's hard to find, also the amplifier got hot when the sound of the PCB increase the frequency, then I think that the amplifier is the source of sound.

I'll look if I can check if the amplifier is the issue.

Anybody who can give me some advice, it's helpful.

thanks.

Felipe Pinto.

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TAS5611a Question