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Old 4th June 2007, 05:16 AM   #1
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Default Prototyping AK4395 based DAC

I have almost finished my latest project. It's based on AK4114 receiver, AK4395 DAC, OPA1632 filter (still testing some filters) and PGA2310 volume chip. I'm controlling the AK4114, AK4395 and PGA2310 with ATmega8535 controller. Display is 2*16 VFD and I use rotary encoder for reading volume. I also have button and spdif boards (no pics yet sorry).

Here are some pics (I update when I get new data/pics):

Pics

Some of the pics ain't good
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Old 4th June 2007, 02:44 PM   #2
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I've been experimenting with an AKM4396 DAC and it sounds marvilous. Why not use the digital attenuator on the DAC rather than a PGA2310? Just curious.

Nice looking boards.

-David
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Old 4th June 2007, 05:35 PM   #3
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Here is the reason for PGA2310 (I don't want to attenuate the digital signal, only analog):

Link

I also have AK4396, maybe I build USB DAC with them.
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Old 4th June 2007, 05:52 PM   #4
SunRa is offline SunRa  Romania
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Hello,

Could you tell me where did you source your AK4396 converters from?
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Old 4th June 2007, 06:51 PM   #5
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Quote:
Originally posted by SunRa
Hello,

Could you tell me where did you source your AK4396 converters from?

I asked samples from my local retailer.
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Old 4th June 2007, 09:51 PM   #6
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Quote:
Originally posted by SunRa
Hello,

Could you tell me where did you source your AK4396 converters from?
I got mine from the local AKM sales office here in Silicon Valley.

-David
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Old 5th June 2007, 05:53 PM   #7
SunRa is offline SunRa  Romania
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Thank you for the answer...

macgyver, your boards are looking prety neat. What process did you use for making them?

And could you post some schematics?
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Old 5th June 2007, 06:41 PM   #8
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Quote:
Originally posted by SunRa
Thank you for the answer...

macgyver, your boards are looking prety neat. What process did you use for making them?

And could you post some schematics?
Boards are made with milling machine (not mine). I don't post schematics now, maybe later.
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Old 5th June 2007, 10:30 PM   #9
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Congratulations Macgyver, very nice looking DAC.

I wish I could build something like that

Have you considered using (instead of AK4114 receiver?) one of the attractive Sample Rate Converters from AKM like AK4125 or AK4127.

Owning a modified M-Audio superDAC (AK4393) fed by an upsampler I can tell that it does make a difference.

Good luck,
M
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Old 7th June 2007, 04:01 AM   #10
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Quote:
Originally posted by maxlorenz
Congratulations Macgyver, very nice looking DAC.

I wish I could build something like that

Have you considered using (instead of AK4114 receiver?) one of the attractive Sample Rate Converters from AKM like AK4125 or AK4127.

Owning a modified M-Audio superDAC (AK4393) fed by an upsampler I can tell that it does make a difference.

Good luck,
M
Thanks I haven't thought about it. The AK412X would come after the AK4114.
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