AnsweredAssumed Answered

ad9122 digital datapath issue

Question asked by ahmet783 on Oct 23, 2015
Latest reply on Feb 27, 2017 by THA

Hello everyone

I tried to make datapath configuration for ad9122 but I could not understand how to set interpolation filter modes. Our setup block diagram is in below. DCI port freq is 246.76 MHz and 16 bit QPSK data is send to ad9122+adl5375 eval board. 983.04 MHz clock signal is excited I want to get 14 MHz bandwidth 70 MHz center freq signal and upconvert this signal to 2.45 GHz with adl 5375.

How to define PLL N1 and N2 settings.

Which interpolation factor and filter mode should I choose.

How to define NCO settings.

 

a2.png

thanks in advance

Ahmet

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