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ADS1299EEGFE-PDK: How to convert Primary data to real electrical signal?

user4818433
Prodigy 180 points
Part Number: ADS1299EEGFE-PDK
Other Parts Discussed in Thread: ADS1299,

I use ADS1299,and  here is what I get .How to convert Primary data to real  electrical signal?

  • 0
    TI__Guru 66186 points

    Hello -

    Thanks for your post.

    Could you give us more information about what you are measuring? In order to understand the expected ADC output, please provide details about the input signal, the connection to the EVM, and all register settings for the ADS1299.

    After acquiring the data, you can convert the 24-bit representation to volts using the Least-Significant Bit (LSB) size. This is the voltage "weight" of one code. If the reference voltage (VREFP - VREFN) = 4.5 V, then the LSB size is (2*4.5)/Gain/2^24. Also note that the ADS1299 outputs data using binary two's complement. For more information on the data format, please read the Data Format section on page 38 of the datasheet.

    If you are using the ADS1299EEGFE-PDK, I suggest using the provided software to begin your evaluation. The software includes Analysis tools to plot and analyze the data as well as various controls to configure the register settings.


    Best Regards,