| banana |
Just opened a DAC from a friend of mind and found this, UL-01AN.
This should be a single opamp, but there seems to be no information about it on the internet. Not from search here, google or alldatasheet.com...
Anyone have information on it, please help :) |
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| peranders |
| Interesting, never seen this logo before. |
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| CJ900RR |
What is the manufator name of the dac? My guess is that its either a circut made by, or on order by, the manufactor, or that its just a standard op-amp with a new print on to make it harder to copy the design.
And i think that the seccond option is the most likely one. |
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| banana |
It's Assemblage DAC2.6 bought from second hand market. I have the schematic, the original opamp should be OPA604.
The previous owner have changed the I/V opamp into OPA627, and the LPF opamp into this unknown creature... I guess it won't be cheap, considered he can afford OPA627 :rolleyes: |
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| badgerboy |
| My guess is possibly a BUF-01 precision buffer/voltage follower, from the BUF-01/02/03/04 family that were designed for high-end audio applications. UL prefix - ??? |
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| arthur |
| it is an average single op amp ,remaked by hk diy shop that wholesale holco resister yrs ago in hk |
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| djQUAN |
from what I have seen before, remarked IC's and transistors have the labels printed on using easily removable ink.
try rubbing a cotton bud with some acetone or lacquer thinner on it and if the markings come off, then it is a remarked chip. |
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