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ADS1198: Sampling rate issue on ADS1198

Part Number: ADS1198

One of my customer used STM32 to communicate with ADS1198.  When he used sample rate 500sps to sample 500 points, the total time will  be 1s in theory, but the total time is 4s. Then he  increased the sampling rate to 1 KSPS, sampling 500 points of time is also close to 4s. The sampling rate has been increased to 4Ksps, and the time of sampling 500 points has been shortened to 2s.  What is reason may cause this problem? Does there any erro on the program?

  • Hello Charles,

    Thanks for supporting our ADS1198!

    Can you check the period between /DRDY falling edges with an oscilloscope? If the period matches the configured output data rate, then the issue may be related to their data collection routine.

    Best Regards,