The documentation says the DFT is calculated every 13.8ms. I'd like to obtain a magnitude and phase result every 2ms for an application where time resolution is most important. Is it possible to change this variable in the AFE? If so, how do you do it?

Thanks.

J

Hi,

The sample rate and DFT number of ADuCM350 are not modifiable, so the time is fixed. ADC runs at 160kSPS, if you want to get DFT result every 2ms, that means you can only get 320 points for DFT calculation. You can use FIFO and DMA to read back all ADC raw data and do DFT calculation in software.

Regards,

Neo