The ADAU1772 datasheet says that "The optional 10 dB PGA boost set in PGA_x_BOOST does not
affect the input impedance. This is an alternative way of increasing gain without decreasing input impedance;
however, it causes some degradation in performance."
What does the "degradation in performance" mean?
I tried to enable the 10 dB PGA boost, but got a really weird issue.
It is obvious that crosstalk occurs between ADCs when the 10 dB PGA boost is enabled.
Is it the so-called "degradation in performance"?