Hello,
I have searched the forum, but with no answer to my question. I am a beginner in digital technology and just seeking help. I am 58 years old and tried to stay away from building DACs, but I heard a lot of good opinions about NOS DACs. I would like to try take on the project. Since, I am bound at home, not COVID related, I went through my part boxes and found the following: AD1866N, AD1851N and AD1892 JR chips. The DAC chips are in DIP packages where AD1892 is SOIC. Is it possible to build NOS DAC with these chips?
Thank you for the help !!!!!!
I have searched the forum, but with no answer to my question. I am a beginner in digital technology and just seeking help. I am 58 years old and tried to stay away from building DACs, but I heard a lot of good opinions about NOS DACs. I would like to try take on the project. Since, I am bound at home, not COVID related, I went through my part boxes and found the following: AD1866N, AD1851N and AD1892 JR chips. The DAC chips are in DIP packages where AD1892 is SOIC. Is it possible to build NOS DAC with these chips?
Thank you for the help !!!!!!
Yes. You would need one AD1866 but two AD1851. You could use the AD1892 as the SPDIF input device but it would far easier with this USB input device.
Hello rfbrw,
Thank you for the reply. I have looked at datasheets of both DAC types and, if I understand it correctly, AD1866 is a multi-bit and AD1851 is single-bit. I would be more interested in multi-bit chip. I was not able to find any schematics on this forum or on the net. Do you have any schematics or source you can point me to?
Thank you for the reply. I have looked at datasheets of both DAC types and, if I understand it correctly, AD1866 is a multi-bit and AD1851 is single-bit. I would be more interested in multi-bit chip. I was not able to find any schematics on this forum or on the net. Do you have any schematics or source you can point me to?
They are both multibit. One is dual channel and the other is single channel. You won't find much on them as they have been obsolete for a decade or two and the stars of the AD multibit stable were always the AD1862 and AD1865. There are quite a few schematics around that can be adapted but the next step is to decide whether you want SPDIF input or USB.
Look over to the digital-line section regarding Miros AD1865 thread. I think that would work with the named DACs as well.
Edit: Link: DAC AD1862: Almost THT, I2S input, NOS, R-2R
Then use your favorite SPDIF Receiver - there are several boards available.
Otherwise, a board like this might work as well if you don't want to build the circuitry linked above:
NOS DAC/I2S NOS Decoder Shifter Board and I2S Data Conversion Right-Aligned | eBay
Edit: Link: DAC AD1862: Almost THT, I2S input, NOS, R-2R
Then use your favorite SPDIF Receiver - there are several boards available.
Otherwise, a board like this might work as well if you don't want to build the circuitry linked above:
NOS DAC/I2S NOS Decoder Shifter Board and I2S Data Conversion Right-Aligned | eBay
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