• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 285 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.

TLC320AD77 alive and dead

Catalin Neacsu50
Prodigy 10 points


I am trying to use this converter to sample a signal. I am using an fpga to drive its clocks and, looking on the analog oscilloscope the device seems to be alive but on the first 16 clock cycles I get both 1's and 0's very fast even with no input while the rest of the clock cycles I get 0's. It seems that the device is either unstable or it resets very fast. I don't understand why.

MCLK is at 8MHz and a sampling frequency of 31.25kHz. This is not a standard frequency for this IC but I don't expect this to be the cause. Any clues please?

regards,

Catalin

  • 0
    TI__Guru* 84915 points
    Hi, Catalin,

    Welcome to E2E and thank you for your interest in our products.

    It could be related with the clock settings. If the clocks are not synchronized and don't respect the clock timing, they could be a possible root cause. Have you checked if both clocks are synchronized? Have you tried with the standard frequencies?

    Best regards,
    Luis Fernando Rodríguez S.