• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 29 subscribers
  • Views 393 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TLV320DAC3203 Frequency Response

Sadanori Kato
Guru 36540 points

Hi,

Is the frequency response of the headphone amplifier also included although the frequency response of the interpolation filter for the 192ksps mode is mentioned on page 43 of the application reference guide as below ?
Could you please send me the information which the frequency response of the headphone amplifier is included if it is not included ?

http://www.ti.com/lit/ug/slau434/slau434.pdf

Best Regards,
Kato

  • 0
    TI__Mastermind 46195 points

    Hi Kato-san,

    The plots you mention is the transfer function from I2S input to DAC output, including analog portion of the DAC. It does not include the line or headphone output response into account. However, there is no explicit low pass filter in the amplifier. The headphone amplifier closed loop response will start to roll off with a -20dB/dec slope at 2MHz for 0dB gain. So amplifier response does not contribute to pass band region response of the DAC chain at 192k sampling.

    Regards,

    J-

  • 0 in reply to J-
    Guru 36540 points

    Hi J-san,

    Thank you for your cooperation.
    I understood.

    Best Regards,
    Kato