This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TAS5710: DVDD and AVDD

Other Parts Discussed in Thread: TAS5710

Hi all,
Are DVDD and AVDD of TAS5710 shorted internally?

Thanks in advance.
Regards,
Toshi

  • Hi, Toshi,

    First of all, I would like to mention that this device is quite old, I would recommend one of our newer closed-loop Amplifiers, like the TAS5754/56, or TAS5760xx if you don't need high processing features. About your question, AVDD and DVDD are used to feed internal analog and digital circuitry of the amplifier, they are not shorted internally so you need to connect 3.3V supply to each one.

     Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer

  • Hi Diego-san,
    Thanks for your reply and suggestion.
    My customer already completed the design with TAS5710 about 3 yeas ago.
    And there is no plan to change it now. However I will introduce your suggestion to my customer for future design.
    Anyway, right now, they have a plan of a small modification, and have some confirmation for re-design as below;

    1. Are DVSS and AVSS of TAS5710 shorted internally?
    2. About DVSS and AVSS, is the technique of single-point ground required or not?
    3. Is it necessary to supply TAS570 with AVDD and DVDD separately? or is it possible to supply AVDD and DVDD from
    the same power line (or plate)?

    Thanks and regards,
    Toshi
  • Hi, Toshi-san,

    Thanks for the feedback. About your question, AVSS and DVSS corresponds to the internal analog and digital grounds, so they are not shorted internally. DVSS can be connected to the system GND directly and AVDD can be connected in a single point to ground as you can see in the Evaluation module. AVDD and DVDD can be connected to the same power supply (+3.3V). 

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer