ADS1299: ADS1299 SPI clock rate issue

Part Number: ADS1299



I've managed to communicate to my ADS1299 custom board successfully. The problem is it limited to 5MHZ SPI clock rate. More than this results in unsuccessful writing and reading ADS1299 registers.

  • I perform the required POR and RESET sequence after Power Up
  • Set the SPI timing as suggested in the ADS1299 datasheet
  • I've checked the SPI bus with my 200MHz oscilloscope and every seems correct.

Has anyone else run into this problem?

Why might this happen? How can I set a successful communication at 8MHz SPI clock rate?

Thanks in advance,