• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 29 subscribers
  • Views 947 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.

PCM4222EVM SFDR

William Duan
Prodigy 50 points
Other Parts Discussed in Thread: PCM4222EVM, PCM4220, PCM4222

Hi all,

Is there anyone who can help to plot a figure below ultilizing PCM4222EVM?

I am really concerning about the SFDR of PCM4222/PCM4220 under -1dBFS input, but it's not specified in the spec.

It seems that the SFDR decreases significantly when input increases from -20dBFS to -10dBFS, then increases gradually when input increases from -10dBFS to 0dBFS.

Any suggestions appreciated!

Best Regards,

William

  • 0
    TI__Guru**** 189399 points

    Hi, William,

    We offer the PCM4222EVM for sale in our eStore. I am not sure if you've already designed a board, or trying to figure out if this part will meet your needs. Actually, getting an EVM can help you in either case!

    -d2

  • 0 in reply to Don Dapkus
    Prodigy 50 points

    Hi, Don,

    Thanks for your reply!

    I've already designed my own board, but I'm not satisfied with the large signal SFDR performance. I just wonder if it is PCM4220 or my circuit that causing the problem. EVM will be a good choice to confirm my suspicion, but I do not have one at hand now. I would appreciate it very much if you could help to perform the test with PCM4222EVM.

    Best Regards,

    William