Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

  • State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 30 subscribers
  • Views 652 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TPA2008D2 SHUTDOWN timing

Arthur Huang
Expert 6065 points

Hi Team,

customer is query if we have timing chart to show the SHUTDOWN# v.s LOUTP/N, ROUTP/N signal? Since they got some audio CODEC software driver issue, so they wants to know when they switch the SHUTDOWN# signal from low to high, how long the LOUTP/N, ROUTP/N signals will be active? Do we have timing chart to show these signals relationship?

your prompt response and advise for this issue clarify is very appreciated.

Regards,

Arthur

  • 0
    TI__Mastermind 20085 points
    Hello Arthur

    I don't have an EVM of this device right now, but I have already requested it. I'll come back to you with more information in a few days.

    Best Regards
    Jose Luis Figueroa
    Audio Applications Engineer | A-Team
  • 0 in reply to José Luis
    TI__Mastermind 20085 points
    Arthur,

    Sorry for the delay, but I hadn't gotten an EVM to perform this test. You should take into account that the start-up time depends on bypass capacitor, you can refer MIDRAIL BYPASS CAPACITOR section of the amplifier's datasheet to find further information.
    I made the test under the following conditions Vdd=5V, RL= 8Ω, Gain= 0 dB and Cbyp=1uF. I got a start-up time of 766ms in output left and 762ms in the output right.
    Please let me know your opinion.

    Best Regards
    Jose Luis Figueroa
    Audio Applications Engineer | LPAA