DAC AD1862: Almost THT, I2S input, NOS, R-2R

[Awh]

Thanks for that, do you have the pcb dimensions for the board on post 2546?
not seeing it anywhere.

Andy

 

[spiggs]

Dimensions are 111.1mm x 74.9mm

 

[Awh]

Thankyou

 

[diyiggy]

I had the same issue, seemed like the render function on JLCPCB did not work. Had to manually input the size and skip the render and it worked.

that's an internet filter in this country to force you to look at the olympic games... all will be working fine after the games !

 

[sworder84]

I got my boards and chips! Everything is ok. Thank you @Paddy Garcia
I will be order a details for boards.

 

[sworder84]

I forgot one thing - which should I buy a 2R2 resistors for PSU-2 (J1-J13)?

 

[miro1360]

@sworder84 Yes, use 2R2 resistors for PSU-2 (J1-J13), like 594-MBB02070C2208FCT

 

[asilker]

sworder84, the 2k2 in psu2 limit current draw and provide a "better behaved" load. similar to the optional 100r between the IV and output

 

[asilker]

Hey nerds, here's my writeup comparing ADA 4627-1 / NE5534 / Burson V6 Vivid / TL071 op amps in this dac:
https://www.diyaudio.com/community/threads/op-amp-blind-test-burson-ada4627-ne5534.381780/page-4

 

[sworder84]

@sworder84 Yes, use 2R2 resistors for PSU-2 (J1-J13), like 594-MBB02070C2208FCT

Okay. I also think about this transport. I need the spdif and usb together.
https://aliexpress.ru/item/32809504593.html

 

[sworder84]

sworder84, the 2k2 in psu2 limit current draw and provide a "better behaved" load. similar to the optional 100r between the IV and output

That's good. I would check resistors on mouser.
By the way I use Muses 01 in my current Dac. I also try OPA2134, NJM4558 but stop on 01. I never use a discrete op amp.

 

[asilker]

I am interested in the Muses too!

 

[miro1360]

@sworder84 The usb-i2s from aliexpress is not what you expect. The spdif is output and I assume you need spdif input.
Consider amanero combo384se, it has USB & S/PDIF to I2S (description said, I never tried it) 🙂

 

[tamra]

Muses05 is coming in this month.
https://www.nisshinbo-microdevices.co.jp/en/about/info/njr/2021/semi_20210702-MUSES05-E.html

 

[miro1360]

Miro,
May I ask in your AD1865 design why you connected SJR to VOutR and SJL to VOutL? What is the benefit of this solution compared to the another, where SJR and SJL connected to AGND?

I overlooked your question. SJ can be connected either to GND but I expect better stability when ti is connected to Vout 😉
Based on this article: https://e2e.ti.com/blogs_/archives/b/thesignal/posts/the-unused-op-amp-what-to-do

 

[gaszto]

I overlooked your question. SJ can be connected either to GND but I expect better stability when ti is connected to Vout😉
Based on this article: https://e2e.ti.com/blogs_/archives/b/thesignal/posts/the-unused-op-amp-what-to-do

Thank you Miro, I’ll modify my PCB according this 😀

 

[miro1360]

You can do, it is comfirmed as working and great sounding device 🤩

 

[gaszto]

You can do, it is comfirmed as working and great sounding device 🤩

Instead of modifying the DAC PCB I started designing a new 🙂
I would like to using the AD1865 DAC, with my Rpi4 and FiFoPi. I already have I2S to PCM card from Iancanada, but I would like to create pin compatible HAT with FiFoPi.
What is better (technical, sonical, jitter) feeding AD1865 with I2S signal through your shift register solution, or using Ian's I2S to PCM card where the I2S conversion has been done by CLPD (ALTERA MAX II).

 

[diyiggy]

Hi, the uf-l ad1862 board was made for that. Short answer, better with the register.

 

[gaszto]

Hi, the uf-l ad1862 board was made for that. Short answer, better with the register.

Thanks diyiggy
I'll design the FiFoPi pin compatible version of the Miro's AD1865 DAC
Any help, will be appreciated 🙂