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ADS1293EVM: ADC output conversion

user5234009
Prodigy 200 points
Part Number: ADS1293EVM
Other Parts Discussed in Thread: MSP430F5529,

Hello,

I am using ADS1293EVM with MSP430F5529. I would like to ask you about ADC output data conversion. Now, I am obtaining data from ADC in this format: 6075549, etc. I found this in the datasheet but I am not sure how to find out the values Vinp and Vinm. I assume it is some kind of measurement between the inputs. Could you please give me any advice regarding this?

I am acquiring 3 lead ECG now but later I would like to acquire single-lead. Is there any difference in the case of the single lead ECG?

Thank you,

Daniel

  • 0
    TI__Mastermind 47625 points
    Hi Daniel,

    Please take a look at the Common questions for Bio-Potential ADCs link in my signature, there is an entry for code to voltage conversion. The conversion for 3-lead vs. 1-lead will be the same, just how you break up the output code is different. Remember that the inputs are measured deferentially, so the resulting voltage will be Vinp - VInn.