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ADuCM360 Sigma-Delta ADC Sample Rate Calculation

Question asked by deepblue on Jan 2, 2013
Latest reply on Jan 11, 2013 by AudeR

Hello,

 

I am having some difficulty calculating the ADC conversion rate corresponding to the ADCMeter example application (ADuCM360V1.0\Code\examples\Adc).  The comments read "3.75Hz update rate with chop enabled" and I calculate a similar value of 3.676Hz based on the data sheet equations for SF=124, AF=14 and Chop enabled.  However, the unit appears to output values at approximately 20Hz when compiling the application using Keil and running on the EVAL-ADuCM360MKZ board.  Do you know what the appropriate equation should be for this configuration?

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