PCM5121: Audio data transmission delay

Amber Si

Part Number: PCM5121

My customer care about data transmission time of PCM5121. So l would like to know what is the delay time range of audio data from input to output? Maybe several μs？

Thanks，

Amber Si

5 months ago

0 Arash Loloee 5 months ago

TI__Mastermind 19420 points

Hi Amber,

Usually for these devices we mention the group delay that is resulted from the selected filter characteristic as well as selected fs . For exact numbers please refer to page 9 of data sheet. For example the normal latency for fs=48k will be 416us. Low latency will be 73uS.

Regards,

Arash

0 Amber Si 5 months ago in reply to Arash Loloee

TI__Prodigy 630 points

Hi Arash,

I find Audio Processing Flow of PCM5121 has many blocks other than Interpolation Filter, why the whole delay from input to output is only impacted by Interpolation Filter? other blocks don't impact the delay?

Thanks

Amber

0 Jeff McPherson 5 months ago in reply to Amber Si

TI__Mastermind 23305 points

Hi Amber,

Arash is out of office today. He will return to answer your question on Monday.

Thanks for your patience,
Jeff McPherson

0 Arash Loloee 5 months ago in reply to Amber Si

TI__Mastermind 19420 points

Hi Amber, even though there are more components in the path, only the filter is the major impact item and for delay we only use that spec.

Regards,

Arash

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PCM5121: Audio data transmission delay