• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 497 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.

TPA3111D1EVM: Specified inductors on user manual

Andrew Chin82
Prodigy 160 points
Part Number: TPA3111D1EVM


On the "TPA3111D1EVM Audio Amplifier Evaluation Board" user guide manual, Table 1, you say to connect series inductors for load impedance. Is this for testing purposes only (like if you want a dummy load)? Or are you actually recommending to the user that they put an inductor in series with the speaker?

  • 0
    TI__Mastermind 24835 points
    Hi Andrew,
    This is good question, and sorry for the confusion. A serial inductor is seried with a pure resistor to simulate the real speaker. For a 4-ohm speaker, the inductance for it is usually around 33uH. And for 8Ohm, the inductance is usually around 68uH. In this way, we could simulate the real application as much as possible.
    Best regards,
    Shawn Zheng