ruffrecords
Well-known member
If I wanted to add USB I/O to a tube mixer, which chip or ready made module would you recommend I use?
Cheers
Ian
Cheers
Ian
Rochey said:Ian,
I was the marketing guy for the TI chips. They are workhorses that work in just about anything, but they do burn more power than other devices on the market.
I strongly suggest PCM2906C - the C revision specifically.
I'll answer what I can.
/R
ruffrecords said:I will check out the cheapo PCM2900 boards. Any known good ones?
Rochey said:Most of them are copy/paste's of the datasheet ref design. Look for one with decent reference caps.
ruffrecords said:PCM2900 board search at Aliexpress returns no relevant results for me. Odd.
Cheers
Ian
Rochey said:They are all based on the same design - PCM2902, PCM2903 --
https://www.aliexpress.com/item/1454024935.html?spm=a2g0o.productlist.0.0.3adc52edh3vZdv&algo_pvid=2ba3e781-fe37-41be-8aec-5627f2b240a4&algo_expid=2ba3e781-fe37-41be-8aec-5627f2b240a4-0&btsid=0ab50f6215959709448942016ea2d8&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
your mileage may vary. Please solicit others information as well as mine.
mhelin said:Not single chip solution but supports 24-bit audio:
https://www.silabs.com/interface/usb-audio-bridges/device.cp2615
Unfortunately this seems to be only half-duplex in 24-bit mode
The "industry standard" USB audio interface these days seems to be an XMOS controller and firmware with a codec (Cirrus or AKM), or with separate ADC and DAC chips. For an example the cheap Soundcraft Notepad FX series small USB mixers use them (the codec is CS4270, there are two of them in the Notepad 12FX model). The 3rd gen Focusrite Scarletts use CS4272 codecs.
cyrano said:USB compliant interfaces go up to every sample rate and bit-depth the OS supports. That's 192 kHz, 24 bit in practice.
Even the Behringer ones have supported that for ages. The UMC404 was very popular on Linux exactly for that reason.
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