AnsweredAssumed Answered

AD7928 ADC multichannel problem

Question asked by edge on Mar 21, 2017
Latest reply on Mar 21, 2017 by CsomI

AD7928 multi channel problem.
Hi, Good Day. Im using ad7928 ADC, i only used a0 and a1 pin . I used potentiometer in both of the analog pin. the problem is, whenever i change the resistance of the one potentiometer connecting to A0, the output value of the analog  read in A1 also changes. I used alot to solve this problem, but still exist... I used two dummy cycle...  by the way, i used 20MHz.
i also checked all the timing requirements and it is correct through logic analyzer.. the only problem is that multi channel selection. please help.. Thank you.. Im using DE1-Soc

Outcomes