Is it possible (effective) to do oversampling and apply extra Moving Average Filter with a delta-sigma (ΔΣ) analog-to-digital converter (ADC)?
More detailed: The ADC (ADS1258) I chose has an effective resolution of 19.5 Bit at a sampling rate of 23.7kSPS/Channel. I need that high sampling rate for a feedback; however the final output can be at data rate of 500 to 1k Hz and must have more effective Bits (22 – 24 Bit).
I know that the ADC applies internally 5 cascaded windowed moving average filters which make it very inefficient to gain further resolution Bits (The noise is than correlated). But then there is the down sampling applied at the end of the ADC.