Dear team,
In the datasheet of ADS8860, It mentioned that the UGBW of the ADC driver should be 4 times larger than then 1/2piRfltClt, which is also mentioned in training video "The Math Behind the R-C Component Selection TIPL 4406 TI Precision Labs – ADCs". Why the the UGBW of the ADC driver should be 4 times larger than then 1/2piRfltClt, which is Op amp four times faster than filter? Is there any mathematical theory behind this "four times"?
Best regards
Wesley