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DRV2605: Haptics to Audio with LRA

Ilann Derche
Prodigy 10 points
Part Number: DRV2605

Hi,

How is and audio signal translated to drive the LRA? Is the LRA actually driven with a time varying waveform?

Thanks,

Ragards,

  • 0
    TI__Expert 8691 points
    Hi Ilann,

    There are a few other posts related to audio to vibe below:
    e2e.ti.com/.../246930
    e2e.ti.com/.../468097

    For driving a LRA, the device will adjust the voltage magnitude based on the low frequency bass content in the audio signal. The frequency will be the resonance frequency of the LRA.
    When driving an ERM, the DC voltage level will change and therefore, the frequency will change.
    This technology is from Immersion's TS2200 library. Please reach out to Immersion for more details.