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Old 12th December 2003, 08:02 PM   #1
Jax is offline Jax  Sweden
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Default Need help with Sanyo LC78820 DAC

I have that DAC in my Teac player. I have tried to find a data sheet on this DAC but they are hidden behind obscure broker sites...

I need to know what kind of output stage it has. It does not appear to be the usual current output you normally see. There is no I/V, instead there is a unity gain follower with a 100 ohm resistor going from the DAC output to the + of the follower.

I did an experiment and fed the DAC outputs though the 100 ohm directly to my preamp which has a cathode follower input (impedance 100:s of Mohms). It appears to work but... could perhaps be done better. (I later added 100k to ground for safety, there is 100V on the other side of the preamp input)

Anyone?
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Old 12th December 2003, 08:52 PM   #2
Netlist is offline Netlist  Belgium
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With some nice smilies you will get this translated:
http://service.semic.sanyo.co.jp/sem..._j/LC78820.pdf

The more smilies the better

/Hugo
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