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

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#6,561
Pin 8 on I2S connector.

I made my own power supplies, I didn't use PSUD2 boards, I have separate secondary's on the transformer for each power supply. GNDs from the digital power supplies for JLS, AK4113 and PCM63 boards are not connected anywhere except through the I2S connector. I did that so that there is no accidental ground loop somewhere.
 

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#6,562
This is the power supply right now. No Graetz yet, I just connected everything to IEC GND, including the blind threads of the transformer. And one 0.63AT fuse was put in for both transformers, temporarily too.
 

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#6,563
NIXIE62 said:
There is one small thing. On the I2S connector on the PCM63 board (pins 2,4,6 and 8) pin 8 says GND, but it is not connected to GND. I connected that from the bottom (pins 7 and 8) so as not to change the connector I used for the AD1865. I have no idea why it is not connected to GND and it says GND? I didn't notice before. This is important to me because the AK4113 and the JLS output part are grounded through that pin to DAC GND.
Click to expand...

Thank you for pointing this out, I repaired the GND pin and here is new gerber for the PCM63P 😊 😉
 

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#6,566
There are some on ebay, but the price is really high. And are they genuine? Well, they probably are. But when I see $100+ for one piece secon hand (used), I don't look anymore. 🙄

https://www.ebay.com/itm/362255966791?hash=item5458236247:g:7AcAAOSwnipWXWqc&amdata=enc:AQAIAAAAwFTvm7DxMEq1Hb6LGx/Bg59ht5/xIPVV8m54mEYgnAhueMSy8mpVGJwEIpZCCtrI6Q8M1qI3nGO8cqD13GqYkkoQmjRzDh+O21HsMM2DSWTYSRCn/TOscFu9Epyo4i+iTlH1NUmKmVYzzhdOsi3sNKXnKjjdquuA+Yx1hLwK6xhBfjZqJ6y5TtynMTC/VXArJPRHalolGsMbz5GnypTpuQ7DBkRC1bRDbZnGEW6VH9RfAmS1Jq8F6fQsJValzKG+fw==|tkp:Bk9SR4SlwYaAYg

I bought the original PCM1702-K (dip16) on ebay Korea made, and they work. PCM1702 U (SMD) I bought two pairs from different sellers and they didn't work, I got a refund.
 
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#6,568
I've bought quite a few from them, and apart from these PCM1702s and some OPA2604 on one occasion, everything else was original and works as it should. If there are fake parts, there are as many as you want, over time I learned to avoid them. 🤣

And if I had listened to @miro1360, I wouldn't have bought a fake SMD 1702. 🤣
 
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#6,578
Yeah no reliable pcm63 no more. I still have two more in case somewhere down the road chips used now go bad. Hope all is good with Ruach, such a kind guy.

There were two pcm63p from Ruach on Serbian sale site for 180 euro, and those have gone as well as i see now.
 
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