AK4499 DAC Design

[walterclark1]

I now have a set of Grzegorz' (aka piglet11) PCBs. Excellent work! Thank you! My buildout plans vary a little, mostly in my choice of supporting parts, so having a ready-made PCB available is going to save me a lot of headaches designing and making my one one-off. The real problem seems to be locating the 4499 chip itself these days. Hopefully that will be resolved sooner than later. I plan to post pics of my progress.

 

[wealas]

AK4499EQ | Audio D/A Converters | PRODUCTS | Asahi Kasei Microdevices (AKM) - marked as EOL. Old stock or equipment pull are really your only options and they will get worse over time.

 

[Kovax]

It also says:

NOTICE

AK4498EQ, AK4499EQ: The redevelopment plan of Flagship DAC products will be available soon.

 

[Ryssen]

Hi,
Sory for late answear.

I did my own version of PCB's for DAC.
1 - 4 layers board with AK4499, ultra low noise voltage regulators from LT.
2 - 2 layers board with analog part and pre stabilization voltage for Digital part.
3 - 2 layers board with amanero and arduino nano for parametrisation of DAC, volume regulation, OLED.

Third PCB will be replaced for new one 4 layers board with 5 digital inputs on AK4118 and one USB Amanero in my version with better voltage regulators, clocks, uC STM32.
To this board will be connected PCB with OLED 256x64.

If You want PCB, just write PW

I did some measurements, SNR less than 130 dB, 50 Hz harmonics does not exist

What is the price for board 1 the one with the AK4499?

 

[piglet11]

What is the price for board 1 the one with the AK4499?

I sent to You PM.

 

[dremeier]

Does someone will be able to offer me the eagle brd and sch files? So not to start from scratch ����.

 

[Kovax]

Does someone will be able to offer me the eagle brd and sch files? So not to start from scratch ����.

Where is the fun in that?

 

[piglet11]

Schematic is accessible for everyone in datasheet

 

[kimschips]

Yes the datasheet is available but if anyone have the time and necessary skills is it great for many of us at diyaudio.

 

[kn0ppers]

You can't buy the IC right now, so why even bother? Do you guys all have spare AK4499s lying around or are you counting on AKM releasing a pinout compatible replacement in the near future? Even if they release it, availability is another story.

 

[piglet11]

USB audio and SPDIF receiver are working well
Now is time for coding STM

 

[piglet11]

PCB with OLED is done
Now I writing software for OLED and user layer for management DAC and inputs selector.
Main screen should look more or less like on attached photo.

 

[walterclark1]

Nice! Its too bad the AK4499 chip supply dried up. I am still hoping AKM starts producing this and the 4497 again. I have PCBs and DAC projects that came to a halt and are dead otherwise.

 

[piglet11]

Finally driver for DAC is finished, hardware part
No I am working on software

OLED test 1 - YouTube

 

[piotrkundu]

Nice! Its too bad the AK4499 chip supply dried up. I am still hoping AKM starts producing this and the 4497 again. I have PCBs and DAC projects that came to a halt and are dead otherwise.

My question too, where do you get the AK4499's ?

PS. Tak pozatym to fajne fotki - troche zakuzone

 

[piglet11]

I bought in Digikey in 2019, now the only source is ebay/aliexpress.

Dzięki , muszę wrzucić do myjki ultradzwiekowej

 

[Ghoostknight]

Hello, any news here? there are new 4499 chips now