NOS TDA1541 + D1 I/V & output stage

[Russellc]

I will also send PM.....

 

[Vunce]

Fellas, lets not bog down Peppennino’s thread with a different project.
All the info you would need about Miro’s Dacs are here:
https://www.diyaudio.com/community/threads/dac-ad1862-almost-tht-i2s-input-nos-r-2r.354078/

 

[peppennino]

No problem, Greedy Boyz! Thank you @codyt

 

[Vunce]

Very good, carry on then!😉

 

[zoom777]

Just to check if there is any progress on your project@peppennino

 

[peppennino]

Yup, PCBs completed: waiting for output caps!

 

[zoom777]

Yup, PCBs completed: waiting for output caps!

Great. I am anticipating your results.

 

[Russellc]

Me too, hopefully I can duplicate your efforts.

Russellc

 

[peppennino]

The completed D1:

 

[zoom777]

Nice. Have you tested with the TDA1541 DAC?

 

[peppennino]

Nice. Have you tested with the TDA1541 DAC?

Tomorrow, almost completed 🍻

 

[zoom777]

Tomorrow, almost completed 🍻

View attachment 1110793

View attachment 1110794

Looking good!

 

[nicoch58]

Tomorrow, almost completed 🍻

View attachment 1110793

View attachment 1110794

 

[peppennino]

Done!





Time to place a 1541 chip inside

 

[Zen Mod]

aaaaaaaaaaaaand!?

 

[nicoch58]

trip trip trip

 

[Zen Mod]

 

[peppennino]

 

[zoom777]

View attachment 1111711

View attachment 1111712

Is the D1 able to work well as per the schematic with the TDA1541 without any changes?
How about the dc trimming for the TDA1541? Are you able to trim down to a steady low level?

 

[peppennino]

I'm trimming offset. How much time the D1 circuit needs to stabilise?