TAS5825M: VR_DIG, AVDD, GVDD caps values

Andy Lee

Part Number: TAS5825M

Hi team,

My customer is asking about why the voltage rating on these caps needs to be 16V. Would you please provide your comments. Thanks!

over 2 years ago

0 Shadow He over 2 years ago

TI__Mastermind 31780 points

Hi Andy

Our capacitor supplier suggest us to choose the rated voltage no less than twice the maximum voltage in our circuit. Besides, the rated voltage of 16V is more commonly used. It's not a strict restriction, our customer can ask their capacitor supplier for more suggestions.

0 Andy Lee over 2 years ago in reply to Shadow He

TI__Prodigy 160 points

Hi Shadow,

By twice the maximum voltage, which voltage are you refering to?

0 Shadow He over 2 years ago in reply to Andy Lee

TI__Mastermind 31780 points

Hi Andy

The voltage is where the capacitor placed. For example at the pin of GVDD, the voltage should be 5V with a very little ripple on it. So the rated voltage of capacitor on this pin should be larger than 10V. At the other place, the rated voltage should be also re-calculated in this way.

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TAS5825M: VR_DIG, AVDD, GVDD caps values