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.
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.
The PCM1704 has no interrnal filter.
Re: PCM63...
So maybe ultra-high resolution pure-PCM is not uncritical?
Nanook said:
PCM63...
slaughters the newer versions....
at least in my humble opinion
stew
So maybe ultra-high resolution pure-PCM is not uncritical?
And the AD highspeed DACs? Are they pure PCM (zero oversampling, zero delta-sigma)?
http://www.analog.com/IST/SelectionTable/?selection_table_id=338
http://www.analog.com/IST/SelectionTable/?selection_table_id=338
rfbrw said:
The PCM1704 has no interrnal filter.
I didn't say otherwise.
b-square said:
I didn't say otherwise.
It could be inferred that you did.
I think I have to explain why I ask for highspeed PCM DACs in an audio forum. Quite a weird idea: If one tacted the DAC of a sample player with an analog VCO (variable frequency) one wouldn´t have to care about anti-aliasing and get a much fatter sound. In an online document from AD they describe architectures of highspeed DACs. They are segmented, but not delta-sigma. So there are at least 16-bitters in any desired speed.
Can this principle be realized?
Can this principle be realized?
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Source & Line
- Digital Source
- fastest pure-PCM DACs