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ADS1292: ECG waveform oscillation

user4858670
Prodigy 10 points

Part Number: ADS1292

Dear TI experts,

We have a problem when testing the ADS1292: we set the device to test the ECG for 1 minute. Thirty seconds before the test, the waveform was normal and the heart rate was normal. The waveform started to be abnormal just after the 30th second, and there was a constant frequency oscillation.
Need to solve this problem quickly, because Customer certification is nearing completion.

Please help, Thank you.

Thanks,

Hu

  • 0
    TI__Guru 69476 points

    Hello Hu,

    Thank you for your post and welcome to our forum!

    Can you provide a schematic and register settings used for the test? 

    Do you think it's possible for the electrode impedance to be increasing, causing more 50-Hz noise to couple into the system as differential noise? Try replacing the ECG input with a signal generator referenced to the circuit board ground and see if data is reliable for 1 minute.

    Best regards,