Other Parts Discussed in Thread: ADS1294, ADS1299, ADS1298, ADS1296
Hi everyone.
I have a question regarding ADS1298r analog to digital converters. We are using currently three of this chip to power out ecg equipment.
Because of chip shortages we are forced to look out for different solutions like:
1- using one ADS1298r and four ADS1294 IC-s via daisy chain
2- using one ADS1298r alongside with two ADS1299 via daisy chain
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On the firs solution I have to multiply the components for the ADS1294. And then use some bit shifting to get ride of the don't care bit.
Will I have any clock issues with the SPI or other problems with this combination of ADS -es, because I read on the forum that certain number of read clock circles have to meet.
I don't have to much experience with this configuration of circuit, I'm not really able to ask good questions, for problems which might arise whit this configuration.
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On the second solution I was thinking to replace two of the ADS1298r which is only reading analog data with the ADS1299. I didn't found to much topics on the forum regarding combining these two IC-s in a daisy chain operation, is there a reason why there are minimal topics?
Are the two IC-s different , in what part are they different is it because of the don't-care bit is not included in daisy chain operation?
Any further recommendations or topics which gives me more details on solving the arising issues would be really helpful .
Best Regards
Robert