TLV320AIC3100: Power ON sequence

Yasuhara

Part Number: TLV320AIC3100

The power ON sequence is specified in the data sheet as follows.
1. Power up SPK VDD
2. Power up IO VDD
3. Power up DVDD shortly after IO VDD
4. Power up A VDD and HP VDD

In my system, the power sequence is as follows.
Please advise if this is allowable.

1. Power up SPKVDD
wait 3ms
2. Power up HPVDD, AVDD and IOVDD at the same time
wait 4.5ms
3. Power up DVDD

over 4 years ago

0 Sanjay Dixit over 4 years ago

TI__Mastermind 23030 points

i would suggest Speaker>>Digital>> Analog supply.

0 Yasuhara over 4 years ago in reply to Sanjay Dixit

Prodigy 210 points

Do analogs have to be powered up at the end?

Is it possible to power on digital and analog at the same time?
Speaker >> Digital = Analog supply.

0 Sanjay Dixit over 4 years ago in reply to Yasuhara

TI__Mastermind 23030 points

The datasheet is specific about the Digital Supply turning on before the Analog Supply..

The datasheet also talks about keeping RESET pin Low till digital supply has powered up.

It could be tried as an experiment to turn on Digital and Analog Supply at same time while keeping RESET Low till all supplies are powered up.

However the customer shall have to evaluate the results.

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TLV320AIC3100: Power ON sequence