TDA1541A non-o/s DAC PCB

[Pedja]

Hi there,

I was thinking about how many of you would be interested for the TDA1541A non-oversampling DAC board. It would comprise the CS8412 receiver and probably the AD844 common base I/V and would be double sided board with silk screen and solder mask. So, the overall conception would be very close to that you can see in my site. However, Elso’s reclocker will not be included but I could try to make the additional mounting of the Elso’s own reclocker board as easy as possible. Eventually, reclocker driven by the canned oscillator could be included if there are more of those interested for this option, but I will not, for now at least, make both the boards with and without it. I/V could be also made using discrete transistors thus having better specs but this would also add somewhat to the overall complexity.

Price will depend on the quantity i.e. on the way the things with this thread will look in the next few days (or weeks).

Anyone interested? None? Tens of thousands?

Pedja

[bzo]

I'd be interested in a board or two. I've been admiring your DAC on your website, and it looks like a real nice project.

I would definately want to use Elso's reclocker, so making that easy to integrate, or included on the board would be a big plus.

[Blitz]

I would be certainly interested, but would like togo either with a D1-outputstage or a tube-i/v-stage. To have two 1541 would not be bad as well.

[Pedja]

So, I have not remained alone here, not bad…

As said, the I/V will be probably based on the AD844 as common base stage. I have found it excellent sounding and extremely simple to build. In this case one can use also any classic (single) opamp based I/V, only the I/V resistor should be soldered across the different points.

Another option is the usage of the discrete common base stage with better specifications (it will not be one of those posted by Jocko and Rudolf), but I first should be sure the sound worth more work (will have the results during next week).

As about the other I/V stages I think I can not say anything better but that the existing I/V could be anytime bypassed so you can use one of your own.

The board will be certainly intended for one TDA1541A only.

Pedja

[Peter Daniel]

If you think about adding reclocker later and don't want to compromise the main board design, you could make it in such a way that the small reclocker board is mounted on stand offs, on the main board, and can be added or removed anytime. Connections could be made with any sort of headers and pin connectors and if not used, certain pins wuld be just shorted.

[Bricolo]

good idea
the jumpers could also be used as I2S inputs, for those who want to use it in a cd player, with the CD chip

[Pedja]

Originally posted by Peter Daniel
If you think about adding reclocker later and don't want to compromise the main board design, you could make it in such a way that the small reclocker board is mounted on stand offs, on the main board, and can be added or removed anytime. Connections could be made with any sort of headers and pin connectors and if not used, certain pins wuld be just shorted.

Yes, that is the idea, something like daughterboard above the main board. Signals paths could be short whether the reclocker is used or not.

[darkmoebius]

I also have been a regular to your website and DAC evolutions(not to mention all the others). I would never try to build one on my own, but with your PCB I'd do it in a heartbeat.

After watching the overwhelming success of BrianGT's Gainclone group buy, I bet we've got another winner as soon as people hear about it..

[mozfet]

I'll have a couple of boards for cetain!

Mozfet

[Calimero]

I am interested in two boards. Have been looking at a good PCB-design for a TDA1541 recently and after browsing through your web-site (especially your 1541 project) I had the plan to email you about the availability of PCB-boards.
Is the board you mention in this thread a new design or the one you have already available. Is it an idea to allow for different kind of ASR's, as I think besides SPDIF or I2S, an USB type of input would be nice.
What about using Elso's design using the AD8561 before the input of the CS8412.

Henk

PS: your web-site is well documented and it is hard to imagine you do this for hobby. It has a very professional look.