PCM1860-Q1: Power sequencing

Takuma Ito

Part Number: PCM1860-Q1

hi, when analog supply is 3.3V and IO supply is 1.8V, which should come earlier? Or there is no such limitation?

also in this supply use case, are there any concern if MCLK input to XI and use 44.1kHz sampling? (just double check in case i have datasheet misunderstanding)

over 3 years ago

0 Carson Allen over 3 years ago

TI__Genius 13610 points

Hello,

There is no such specification of order but you could do analog than IO if there were going to be a order.

Yes that is allowed to answer your 2nd question.

Best Regards,

Carson

Low Power Audio Applications

0 Takuma Ito over 3 years ago in reply to Carson Allen

TI__Expert 5200 points

hi Carson

What could happen if customer do in opposite order?

0 Carson Allen over 3 years ago in reply to Takuma Ito

TI__Genius 13610 points

Hello,

Nothing specific it would just be good practice to have analog powered up before you have interface powered up so that you dont start any communication until internals of chips are powered on.

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PCM1860-Q1: Power sequencing