My prototype of the TDA1541A plays quite well, nice clean output 
Time to buy out the whole eBay and rise the price of this DAC even more LOOL
Time to buy out the whole eBay and rise the price of this DAC even more LOOL
- no digital filter, NOS
- full THT with glue-logic to maintain the nostalgia
- simultaneous mode (I2S input)
- big foil capacitors
- power supplies will be on the PCB (78/79xx regulators)
- opamps remain for the I/V
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My prototype of the TDA1541A plays quite well, nice clean output
Amazing. Another great DAC design, that you also found time to build. Nice TDA1541a chip too
I hope you dont mind me asking the usual silly question: do you think you can hear differences in music intrinsic to the TDA1541a vs AD1862, despite all the differences in power and output stages?
Hi grunf,
I have bought the board from following link-:
https://www.diyaudio.com/community/...c85-6922-6dj8-etc-mu-follower-or-srpp.388295/
using 6N6P tube.
but I am struggling which HV power supply is good but easy (265V).
happy
TL783C, if you find original one somewhere, because it is no longer made.
The implementation is simple, like the LM317. A protective zener diode (80-100V 5W) is required. In front of regulator I suggest a CRC and a transformer with a secondary 230VAC 0.15A (for 265V DC).
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HiMy prototype of the TDA1541A plays quite well, nice clean output
Time to buy out the whole eBay and rise the price of this DAC even more LOOL
- no digital filter, NOS
- full THT with glue-logic to maintain the nostalgia
- simultaneous mode (I2S input)
- big foil capacitors
- power supplies will be on the PCB (78/79xx regulators)
- opamps remain for the I/V
I am finishing some universal logic ICs I2S format interface to almost "every format".
Could be used for diskrete DAC R2R ladder too.
- data in the middle position between the LEs
- Stopped clock opperation
- MSB inverting option
- inverted data
- 14bit to 32bit word option
note in the datasheets that for TDA1540/41A TimeSim format
- BCK is inverted and conversion starts when 0 to 1 transition of LE
- MSB must be inverted
- BCK not inverted rising edge for MSB and conversion starts when LE going from 1 to 0.
_ MSB remains the same value
Very nice Zoran, I was looking for a device like that for my TDA1540s. Many Thanks.
Ahaha, Miro didn't resist with the TDA1541A pcb .... one chip to rule them all. Ahaha we told him to stay away...now he will have to travel with it, bringing it back till the volcano forge of Mordor..under the mercantil eye of RyanJ...lol.
My TDA1541A pcb traces are made from elfique Myhtril, hardly extracted by dwarfs from the mountain... better than the copper. It litterally disseapers in the soundstage...invisible, yes. Ahaha but when a gobelin is in the room, then it shines! What a hobby
Ahaha, Miro didn't resist with the TDA1541A pcb .... one chip to rule them all. Ahaha we told him to stay away...now he will have to travel with it, bringing it back till the volcano forge of Mordor..under the mercantil eye of RyanJ...lol.
My TDA1541A pcb traces are made from elfique Myhtril, hardly extracted by dwarfs from the mountain... better than the copper. It litterally disseapers in the soundstage...invisible, yes. Ahaha but when a gobelin is in the room, then it shines! What a hobby
In AD1865 DAC will i hear a difference if i replace C7,C8, C27, C28, C32, C33 Panaconic EEU-FC...330uF with Nichicon UFG...100uF not only because of the difference in uF?@happylistening Exactly, these capacitors are not needed for an external I/V
Hi @happylistening
Try the ECC88 instead, the 6N6 has a lower gain and is better as a buffer or line stage.Then the supply voltage will be lower (180V). I recommended the same to Vunce.
You can make a simple power supply or regulator according to this scheme, the sum of the zener diodes should be approximately the output voltage (Vzener=Vout + 4V) , I made it on a small PCB with smd resistors, the DN2540 can be in a TO92 case. M1 can be any n-mosfet for voltages higher than 400V and for lower currents .This reg is made for the ECC88 in my DAC.
You can also add protection diodes to M1 and a film cap of 2.2uF (or similar) to the input of the regulator.
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Amazing. Another great DAC design, that you also found time to build. Nice TDA1541a chip too
I hope you dont mind me asking the usual silly question: do you think you can hear differences in music intrinsic to the TDA1541a vs AD1862, despite all the differences in power and output stages?
It's too early to say, but I think AD1862 get nice competition. The battle will be very subjective and very interesting
... this DAC has something in it, it really sounds nicely @Arnolddew
The size of the PCB is minimum: 190x90mm without power supply, or 190x150mm with power supply (can be more or slightly less). uf.l may be on the PCB.
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@Zoran TDA1540 is slightly different from TDA1541A ... BCK is inverted for both, but TDA1541A must see the stopped BCK on the 0 (TDA1540 is 1), otherwise the LE is not accepted (this took me a few days to figure out because I used the BCK logic from TDA1540 and it did not worked even though the signals were aligned)
I am surprised no one asked yet -- Will you post gerber files?It's too early to say, but I think AD1862 get nice competition. The battle will be very subjective and very interesting
@Arnolddew
The size of the PCB is minimum: 190x90mm without power supply, or 190x150mm with power supply (can be more or slightly less). uf.l may be on the PCB.
@happylistening
If you decide on TL783C, for 265VDC change 27k 5W to 33k 5W and trimmer 200ohm to 150ohm (or serial connection of 100ohm resistor & 50ohm trimmer).
If you decide on TL783C, for 265VDC change 27k 5W to 33k 5W and trimmer 200ohm to 150ohm (or serial connection of 100ohm resistor & 50ohm trimmer).