ADS1299: Sampling data with few "0" data

YAN LI

Part Number: ADS1299

Hi,

Recently I use ads1299 in my project. I found few "0" data in my sampled data, about 1-3 points/min, I use 4khz sample rate.

So I check the status bits every "0" data, and the results show when I get 0 data, the fisrt 4 bits are not "1100".

Can you give me some advice about this?

Thanks.

Yan

over 3 years ago

0 YAN LI over 3 years ago

Prodigy 100 points

Can I just read data again when the status bits are not 1100?

0 Praveen Aroul over 3 years ago in reply to YAN LI

TI__Mastermind 49946 points

Hello Yan,

I wanted to let you know that our expert on this device is out of the office for Christmas and New Year holidays, he will be back in the office on 1/3/22.

Thank you for your patience.

0 TCT over 3 years ago in reply to Praveen Aroul

TI__Genius 11550 points

Hi Yan,

Your data capture may not be synchronized to the DRDY if the 24-bit status bits do not start with 0b1100. There is an option to read the data multiple times by setting the CONFIG1.nDAISY_EN bit to 1. However, I am not sure if using the multiple readback mode will solve your issue as the data alignment may be corrupted.

Thanks

-TC

0 YAN LI over 3 years ago in reply to TCT

Prodigy 100 points

Thanks a lot TCT, I will try it.

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ADS1299: Sampling data with few "0" data