Hi Chris,
It seems it is the setting time that causes bad noise performance.
my puzzle is with the same setting time latency, the noise performance is much different by enabling HPF or not.
when enabling HPF, the noise performance is much worse as i said in my original description.
it seems that the total setting time depends on whether enabling HPF or not.
the setting time datasheet gives is 62/fDATA, is it the total setting time?
or is it just the FIR setting time when IIR is disabled? if IIR(HPF) is enabled, what is the total setting time?
Regards
ingdxdy