Tool/software:
i design a board ads1299 + esp32 to test EEG. but i can not make the ads1299 work.
After power supply, PWDN and RESET both are pulled to vcc3.3v, but the vcap1 is close to 0v.
can you help to see the design? i have no idea to make it work.
thank you very much.
Hello Allen,
It looks like you have missed a connection to one of the AVDD pins. Please review all AVDD and AVDD1 pins and confirm with a DMM they correctly measure 5V.
Once all analog and digital supplies have fully ramped, you can give a reset pulse to the nRESET pin and the device should enter a normal operating state.
Regards,
Ryan
