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Original question:

TLV320AIC3120: some questions

TLV320AIC3120: Do HPVDD and SPKVDD need to be connected even without speaker?

Cameron Wutzke
Intellectual 2371 points
Part Number: TLV320AIC3120

Same question about SPKVDD was answered here: https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1025943/tlv320aic3120-some-questions/3793863?tisearch=e2e-sitesearch&keymatch=TLV320AIC3120%25252520AVDD#3793863

But it didn't mention HPVDD, does HPVDD require connection as well even without a speaker?

  • 0
    TI__Genius 16905 points

    Hello Cameron,

    Yes, the connection is required, and the same logic is applied.

    HPVDD can be tied to AVDD and must not be less than the AVDD voltage level. If headphone operation is not desired, register settings can be kept at the default state of power down to ensure minimum current drawn from the HPVDD power-rail.

    I hope this helps.

    Best,
    Andrew