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ADS1299: DRDY is not toggeling

Stefan Erni
Intellectual 560 points
Part Number: ADS1299

I have a own board with a ADS1299. I can read and write register an read data in rdata mode.

The problem is the speed. it's working just with 250sps. I think I need to use the DRDY Pin. But this Pin is always high even if I tried all pin to set high or low like in the datasheet.

 I used the intern clock and I can see the clock out on the pin out.

  • 0
    TI__Guru 66446 points
    Hello Stefan,

    Thanks for your interest in our ADS1299!

    You certainly need to use the /DRDY pin. This pin outputs an active-low signal to indicate when new data is ready. On start-up, /DRDY should begin pulsing at the default data rate after the START pin is pulled high or after the START SPI command is sent.

    Best Regards,