MF X-DAC Output stage SCHEMATICS

[jean-paul]

Elektor used AD844 in one of their first DIY DACs ( with PCM63 ). This was when AD844 was new on the market.

Off Topic: The Elektor DAC was also a very good PCM63 DAC. I recall it being equal to Audionote DAC3 ( with E88CC in the output stage ). Made one for a friend who still uses it.

 

[Nicke]

Elektor used AD844 in one of their first DIY DACs ( with PCM63 ). This was when AD844 was new on the market.

Yes,you are right but they used the 844 as a regular inverting opamp while Lars used it as Pedja does,with the I/V conversion resistor coupled to ground from pin 5...

Off Topic: The Elektor DAC was also a very good PCM63 DAC. I recall it being equal to Audionote DAC3 ( with E88CC in the output stage ). Made one for a friend who still uses it.

I used it with my I/V stage(see Jocko´s thread about simple I-V stage) which was much better than the original analog stage.

 

[lt cdr data]

I just made a post on the burr brown pcm63 data sheet, this dac was used in the mf xdac, along with the yamaha receiver chip, but they used the hdcd filter in between.
they have almost directly used the datasheet, and the output stage.

check out burr brown's pcm63 data sheet for more.

 

[guido]

Elektor used AD844 in one of their first DIY DACs ( with PCM63 ). This was when AD844 was new on the market.

Off Topic: The Elektor DAC was also a very good PCM63 DAC. I recall it being equal to Audionote DAC3 ( with E88CC in the output stage ). Made one for a friend who still uses it.

Did you do anything about the resistor between agnd and dgnd?
According to the datasheet and an AD applicationnote doing just that is not done.