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AD9874 EVAL-BOARD first steps

Question asked by Seregga on Nov 21, 2017
Latest reply on Nov 24, 2017 by Seregga



I get AD9874 evaluation board with HSC-ADC-EVALCZ and try to get any results

IF=14,33 MHz 

internal FREF=26 MHz

internal Fclk=18 MHz

Fclk/8=2.25 MHz

internal LO=16.58 MHz 

 I don't see anything on average FFT in Visual Analog.




I checked resistors, cable connection and power. It looks ok. DC voltage on TP1(charge pump) is 1,58 V - is it correct?


Please help me, because I don't know where is a problem and how to fix it.


Best regards.