ADAU1787 filter response

Hello AD,

The ADAU1787 is a Sigma-Delta ADC/DAC which is assumed to be internally running at 6.144 MHz. Does the part have any internal analog anti-aliasing / reconstruction filtering? Often, a second order filter with >20dB suppression at the internal Sigma-Delta rate is incorporated - is that the case here?

What is the wideband response (up to F_nyq or Fs) of the decimation (ADCxx_FCOMP = ON vs. OFF) and interpolation filters (DAC_MORE_FILT = 0 vs. 1) at fs = 192 / 384 / 768 kHz, please? The datasheet seems to offer very limited information.



Added F_nyq
[edited by: bernhardb at 1:44 PM (GMT 0) on 29 Jan 2020]