Is the SAA7220P/B really that bad ?

[gaetan8888]

Hello

The CD650 CD-player, who use a SAA7220 and a TDA1541, did use a 3k9 pull-up resistor BCK to +5V

Seem interesting, anybody try a pull-up resistor like this one ?

Thank

Bye

Gaetan

[Malefoda]

Hope you get an answer, looking for the right way to feed from a flipflop w or w/o the R in the line, so a can it be fed by a 5V clock directly or may I keep the RC wich is between the SAA7220 fed...
I still have that in mind:

Originally Posted by martin clark

... the 7220 swings 5v pk-pk on its outputs, and the 1541 only needs a tiny current centred c1.4v to switch - it's a current-routing logic; the excess voltage swing just pushes HF currents into the dac.