It seems to indicate that it’s pcm to dsd conversion is 48kHz. Well, at least the documented figures.
The output sample rate spec in the table at page 12 of the datasheet indeed gives the impression that everything is decimated to either 44.1 kHz or 48 kHz before conversion to DSD, but technically that wouldn't make any sense. Is it just an unclarity in the datasheet or a stupid internal interface definition by the AK4137 system designer resulting in a quite unnecessary decimation?
In either case, they are out of stock again at Digi-Key.
In either case, they are out of stock again at Digi-Key.
Spreadsheet updated with member 'atohmdiy' as an additional subscriber - the unit cost of a PCB set has reduced further.
I don't think i saw anywhere the power consumption of the dac. I have a silent switcher i could use, but i think its 5v (or 6.5v with external regulator) risk be pretty tight for the DAC + DSD modulator.
PCBs arrived today. I'll start packing them tomorrow and hope to get them all send out by next weekend.
This post from ppy seems to contradict that, it's probably just an unclarity in the datasheet. https://www.diyaudio.com/community/threads/simple-dsd-src-for-beaglebone.358147/post-7201934
See post #88, https://www.diyaudio.com/community/threads/return-to-zero-shift-register-firdac.379406/post-6999623 for measured supply current values.
I've started to arrange onward delivery of the group buy PCBs and the first outbound packages will be collected from me on Friday. As the value is quite low and I have a few spare PCBs I am not including tracking to keep the cost down. I have updated the spreadsheet for packages ready to ship out and with the final settlement payment amount - would be good if people (highlighted in amber in the final payment column) could push settlement payments through to me via Paypal family and friends.
https://docs.google.com/spreadsheets/d/1uKnO0GdXeRVG1_gdMzKvs1F0184cyWlzM4Ul6nbt7Io/edit#gid=0
I'll get some more packages labelled up this evening and tomorrow.
Thanks
Ray
https://docs.google.com/spreadsheets/d/1uKnO0GdXeRVG1_gdMzKvs1F0184cyWlzM4Ul6nbt7Io/edit#gid=0
I'll get some more packages labelled up this evening and tomorrow.
Thanks
Ray
First batch all ready for collection. More are being packed and labelled at the moment.
The rest of the packages are ready to go and will be posted on Saturday morning. It would be good if you guys could reimburse me for the postage costs via Paypal 'Family and Friends' please, amounts are in column M of the spreadsheet.
https://docs.google.com/spreadsheets/d/1uKnO0GdXeRVG1_gdMzKvs1F0184cyWlzM4Ul6nbt7Io/edit#gid=0
https://docs.google.com/spreadsheets/d/1uKnO0GdXeRVG1_gdMzKvs1F0184cyWlzM4Ul6nbt7Io/edit#gid=0
Hi Ray ... just saw your messages and have transferred money. Have a pleasant evening ;-)
Jesper
Jesper