Hi guys,
Just received this PCB which I bought on a whim thinking it would be fun to experiment with, but now the seller is telling me he can't supply the schematic. Does anyone out there have the schematic for this very common 1541 DAC PCB? I have contacted multiple vendors of this with no reply.
Thank you.
Just received this PCB which I bought on a whim thinking it would be fun to experiment with, but now the seller is telling me he can't supply the schematic. Does anyone out there have the schematic for this very common 1541 DAC PCB? I have contacted multiple vendors of this with no reply.
Thank you.
http://www.lampizator.eu/lampizator/TDA1541 corner/TDA1541.html
https://www.tnt-audio.com/clinica/tnt1541_e.html
https://darklanternforowen.wordpress.com/2017/09/26/adagio-tda1541a-non-oversampling-dac/
Go through these, I have no ties to any sellers.
https://www.tnt-audio.com/clinica/tnt1541_e.html
https://darklanternforowen.wordpress.com/2017/09/26/adagio-tda1541a-non-oversampling-dac/
Go through these, I have no ties to any sellers.
Yes, just the bare PCB, although I have the DACs and 7220s and probably most of the rest of the parts, I would just like to see how these guys designed it.
Thanks
Its interesting that the SAA7220 has an internal crystal oscillator, its designed to be used with an external 11.2896MHz XTAL. Here its being driven by the DIR9001 system clock output which will only be valid when its locked to an S/PDIF input signal. This might give the SAA7220 some hiccups as likely its designed to have a continuous 11MHz clock present.
Incidentally the schematic shows DIR9001 XTI as open whereas the DS says to connect to DGND when unused.
Incidentally the schematic shows DIR9001 XTI as open whereas the DS says to connect to DGND when unused.
HI
Any chance someone could share the schematic?
Or actually just tell me what are U2, U5 and U4 SMD on the underside?
...already purchased one...cheap.
Thanks
Any chance someone could share the schematic?
Or actually just tell me what are U2, U5 and U4 SMD on the underside?
...already purchased one...cheap.
Thanks
So I asked the AliExpress vendor what the Ics are, and they send me schematic.
...but still I cant see the names of the ICs on the 1st page.
Does anybody know?
...but still I cant see the names of the ICs on the 1st page.
Does anybody know?
Seen it too fast, sorry !
U1 on the shematic is a 3.3V regulator ; U2 is the IC that convert the SPIDF input into data, clock, timing for the SAA7220 ic on the front pcb.
U3 and U4 are flip flops, logic ICs (ref not given on the pdf) between the the two spidf inputs (Toslink and coaxial copper) and the spidf reciever (U2)
Thanx Diyiggy
Yeah, I figured out the DIR9001 and the voltage reg already.
...but would you know/guess on which flip flop ICs?
Yeah, I figured out the DIR9001 and the voltage reg already.
...but would you know/guess on which flip flop ICs?
I would not loose too much monney and time on that shematic and pcb, it is very basic. You will have only a basic idea on how this good TDA1541A chip is sounding.
The only commercial DIY project to have a pcb here or in internet I am aware to and that worthing to spend few monney is the AYA 2 to 5 Audial DIY projects.
One member @miro 1360 has generously given a design with the gerbers. It is free and thread's members and himself can help : https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-268#post-7159210. Maybe someone has a spare pcb, don't hesitate to ask in the thread.
https://electrodac.blogspot.com/p/dac-ad1862-almost-tht-i2s-input-nos-r.html
Of course you can try too to look for at looking your shematic, logic ic that match on datasheets at Mouser : look at shift register and flip flop ICs at Mouser... helping yourself with the filter and searching motor.
Hope that helps.
The only commercial DIY project to have a pcb here or in internet I am aware to and that worthing to spend few monney is the AYA 2 to 5 Audial DIY projects.
One member @miro 1360 has generously given a design with the gerbers. It is free and thread's members and himself can help : https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-268#post-7159210. Maybe someone has a spare pcb, don't hesitate to ask in the thread.
https://electrodac.blogspot.com/p/dac-ad1862-almost-tht-i2s-input-nos-r.html
Of course you can try too to look for at looking your shematic, logic ic that match on datasheets at Mouser : look at shift register and flip flop ICs at Mouser... helping yourself with the filter and searching motor.
Hope that helps.
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