PCM1754: Pop question about PCM1754

Gary Teng

Part Number: PCM1754

Tool/software:

Hi Sir,

My customer use PCM1754 and they find pop when LRCK signal is start and stop. Is there any suggestion about their circuit design to prevent the output level shift question? Thanks for your kindly help.

Regards,

Gary Teng

3 months ago

0 Arash Loloee 3 months ago

TI__Mastermind 22480 points

Hello Gary,

Please refer to the following post regarding pop noise in this device.

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/956405/pcm1754-q1-pop-noise-issue

On a separate note, if possible I would use a simpler schematic at the output of the DAC for filtering stage ( something like the one that I have attached below. You can add more stages as needed, but this is a good and simple starting point)

Regards,

Arash

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PCM1754: Pop question about PCM1754