PCM1863: Power up sequence when powering AVDD/DVDD/IOVDD separately?

Part Number: PCM1863

Hi team,

Based on DS, section 12.7, shows 2 cases 3.3V of all supplies or separate, do you have any sequence requrement when start-up/shut-down?

Do you have any limitation for raising /falling time of AVDD/DVDD/IOVDD at those time?

over 3 years ago

0 Sanjay Dixit over 3 years ago

TI__Mastermind 23030 points

shall respond by tomorrow

0 Sanjay Dixit over 3 years ago in reply to Sanjay Dixit

TI__Mastermind 23030 points

The Datasheet does not mention any specific Rise and Fall times for the Power Supplies.

If you refer to the diagram above, a Level based operation is described. When IOVDD ,DVDD,AVDD all are above a certain DC Level then the IC Starts operation. For example for the 1.8v this level is 1.5v. Also for 3.3v we have a level of 3.0 v. Therefore when all supplies have reached 3v and 1.5v, the chip starts its operation.

On switchoff we should ensure that all Voltages have reached zero before attempting a second power up.

0 NY over 3 years ago in reply to Sanjay Dixit

TI__Expert 3040 points

OK thanks!

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PCM1863: Power up sequence when powering AVDD/DVDD/IOVDD separately?