Forum Post: Four questions about ADS1298 for EEG

Hello.

1. In the case of setting Vref from external electric source,how much is Vref setting range?Vref means voltage between VrerP and VrefN.
2. Writing Input-Referred Noise:4uVpp on features of ADS1298 datasheets Page1,this means that output digital value has noise?
3. In the case of setting Amp on former ADS1298,can we use RLD,Lead-Off detection?And if impossible,can we turn off those functions?
4. Writing APPLICATIONS are Medical Instrumentation(ECG,EMG and EEG) on ADS1298 datasheets Page1,input voltage of EEG is very small so I think that ADS1298 unfitted for EEG.Which are developers of ADS1298 thinking that this device fits for an instrument measure skin directly or indirectly?(I’m sorry for an ambiguous question.)

ADS1298 datasheets：http://www.tij.co.jp/product/jp/ads1298 

Best regards.