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AD5755 working in noisy enviroment

Question asked by wallman16 on Dec 18, 2014
Latest reply on Dec 24, 2014 by wallman16

Hi ,


we are using AD5755 and not using CRC or the Fault pin for SPI data check .

We are sending Fixed data to DAC and after noise test we see that even writing to Data register with Fixed data we see that output doesn't change , but if we write some other value ,DAC seems to be responding could you please let me know , what all the possible things effecting the DAC working . As DAC seems to be responding on writing other data then fixed data and not to Fixed data .


Is there a buffer which checks whether to latch the update data to DAC circuitry.


Thanking you

With best regards