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TAS2505-Q1: Internal LDO also powering IOVDD ??

Oz Kocoglu
Intellectual 270 points

Part Number: TAS2505-Q1

Hi, 

I have a question regarding the power supply setup. If  there is no 1.8V available, there is the possibility to internal LDO of the Amplifier (TAS2505-Q1) to power AVDD and DVDD like described in the Datasheet.

But I am wondering if it is covering also IOVDD or is there a need to power IOVDD with 3.3V additonaly ? 

Thanks and best regards,

Oz

  • 0
    TI__Guru** 114315 points
    Hi Oz,

    IOVDD can be supplied by the internal LDO as well. So AVDD, DVDD and IOVDD can be supplied by 1.8V from LDO.
    External 3.3V for IOVDD should be used if your MCU or Host logic is 3.3V. If master and slave IOVDD levels are different you would need level translators.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators