decoupling PCM1716

[Smiffy]

Decoupling digital supply
Oscons or Black Gates?
decoupling analogue supply for internal op amps
Black gates?
Any thoughts/preferences
Ta for any inf
Smiffy

 

[hjelm]

Sorry if i intrude in the thread but any recommendations for the LPF filter caps on pins 11 and 18 on the pcm 1716. It is apparently equally important as the decoupling caps.

 

[ljordan]

What exactly are these pins 11 and 18? Labeled common of analog output amp(L and R).


Lewis

 

[Smiffy]

Can't find any reference to pins 11 and 18 in the datasheet.Will ask BB what they do.

http://www.analog.com/Analog_Root/productPage/productHome/0,2121,AD8099,00.html

found the above op amp from AD,Looks promising but non conventional pin outs

Smiffy

 

[Smiffy]

PS
No intrusion at all Hjelm.Glad you brought it up.Was going to leave those caps alone.Maybe not now you mentioned it.Have e mailed BB/Ti
Smiffy

 

[hjelm]

Maybe i was wrong in its function but it is apparently important see Kuei's statement a bit down.http://www.diyaudio.com/forums/showthread.php?s=&threadid=15020&highlight= .

 

[Smiffy]

Thanks for the link.will give it a good read
This was the reply I got from Ti/BB today

EXRL,EXTR, these two pins are noise de-coupling function of
internal analog 0.5Vcc bias.
This 0.5Vcc bias is common level of internal analog section as
channel individual.
Noise de-coupling capacitor ( 1uF to 10uF ) should be connected
as typical application.

Smiffy