b-square said:The PCM1704 and the WM8740 (and probably others) have 8xFs modes for use with an external digital filter. In 8x mode they accept 768kHz sample rate, 24-bit samples. Neither chip is upsampling in this mode; that is assumed to have been done by the external filter, like the DF1704.
Nanook said:
PCM63...
slaughters the newer versions....
at least in my humble opinion
stew
rfbrw said:
The PCM1704 has no interrnal filter.