Forum Post: RE: ADS1198: ADA1198 sampling rate variation and signal attenuation w.r.t. sampling rate

Hi Alex Thank you for your reply. Attached are the data files (Please visit the site to view this file)(Please visit the site to view this file)f digital output signals for 125Hz and 250Hz input sinusoidal signals. Yes, we are using the internal clock of the ADS1198. No external clock. we are reading the data via SPI on every alternate DRDY, with actual sampling rate of 500Hz and data reading output at 250Hz. after directly reading the data, we convert using floating point and transfer to a file. we do not see a problem at 10Hz signal. 10Hz data file: (Please visit the site to view this file) also we do not see a problem if used 250Hz ADC sampling rate and data read also 250Hz.