ADC block showing unexpected data rate.

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Hello everyone,

I unable to understand why ADC not giving expected sampling rate? I’m using the Sparkfun github library code(given in below link).

https://github.com/sparkfun/SparkFun_AD … PP_Library

Also, I’m setting the TI ADS1015’s config register bit as : 110 1110 0011 which means ADC is in Continuous conversion mode and currently performing conversion, differential input from AIN0 - AIN1, ±1.024V as PGA setting with 3300 samples per seconds(sps). After setting up the config register I continuously reading conversion result from conversion register till I get desired number of samples. While, analysing the samples I’ve noticed that current data rate is 4723 sps. But I’ve defined data rate in config register is 3300sps and its maximum rate. I’m not able to understand why is this showing unexpected data rate?

Please reply to: rahul.jidge@raykor.com

Thanks for any help.

Greetings

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Have you set the ALERT/RDY pin to notify you that conversion is complete, and are you reading that pin?