AnsweredAssumed Answered

AD5933 doesn't work at low frequency operation

Question asked by PatrickLafont on Feb 5, 2016
Latest reply on Feb 11, 2016 by musach

I see in the AD5933 datasheet that it can operate with external clock source as low as 25 kHz.

I tried to feed the device with 50 kHz and 25 kHz and experienced the issues:

  1. With such low frequencies, the AD5933 sends out constant data. It seems that the real and imaginary are not correct (they are constant) and the AD5933 doesn't work correctly.
  2. At 50 kHz, I can change the output frequency of the AD5933, but at 25 kHz, any attempt to change the output frequency results in hangs. The device can not be controlled any more, the only way to make it work again is to power down and up again.

Maybe someone already experienced these issues and know how to fixe them ?

 

Thank you very much for your helps.

Outcomes