My customers are considering LT1328.
I got a question there.
It seems that there was a case where it was not possible to communicate in FIR mode in case of short distance (about 1 cm).
Therefore, when changing from C4 (capacitor of data sheet block diagram Pin 2) at 470 pF to 2.2 μF, communication became possible.
#1 Are there any concerns when using a C4 capacitor at 2.2 uF?
(Except that the bandwidth of the high pass filter is expanded)