Buffalo DAC (ESS Sabre 9008)

[BrianDonegan]

TexasInstuments LMV7219M5/NOPB

[Russ White]

Originally posted by woodturner-fran
Sorry guys,

I'm just about to put in a mouser order.... could someone tell me again the correct form factor and type for the comparator chip? I was going to add the newer one into mine at some stage...


something tells me it was SOT23?? Is that right?

It is SOT23.

Do you need counterpoint mod schematic?

Cheers!
Russ

[QSerraTico_Tico]

Originally posted by BrianDonegan
TexasInstuments LMV7219M5/NOPB

AFAIK it's a National part

[woodturner-fran]

mmm, it doesn't pop up right away on mouser, but I'll search a bit better later.


Yes, Russ, send it on.... you have my email right?


Fran

EDIT: mouser don't do national stuff, maybe thats why...

[BrianDonegan]

Originally posted by QSerraTico_Tico



AFAIK it's a National part

Correct. Brain fart.

[Luke]

National part

Brain fart

are you guys doing cockney rhyming

[fmak]

Russ/Brian

There may be an issue with LCDPS powered at 12V ac driving the Buffalo at 192k. I use it as a preregulator feeding an ALW regulator at 11.5V. However, at 192k playback, regulation is inetermittantly lost due perhaps to higher current than atticpated thru the R-LR network.

I shall have a look at the Rs associated with the LM317 later.

[Russ White]

Originally posted by fmak
Russ/Brian

There may be an issue with LCDPS powered at 12V ac driving the Buffalo at 192k. I use it as a preregulator feeding an ALW regulator at 11.5V. However, at 192k playback, regulation is inetermittantly lost due perhaps to higher current than atticpated thru the R-LR network.

I shall have a look at the Rs associated with the LM317 later.

You probably have too much current for the voltage drop accross R1-4 with your 12V secondaries.

You should either jumper those Rs or use a smaller value say 1-2 ohms based on your transformer.

12VAC secondaries with 11.5V output is not that much headroom.

Cheers!
Russ

[fmak]

Originally posted by Russ White


You probably have too much current for the voltage drop accross R1-4 with your 12V secondaries.

You should either jumper those Rs or use a smaller value say 1-2 ohms based on your transformer.

12VAC secondaries with 11.5V output is not that much headroom.

Cheers!
Russ

Yes, about 100 mA for Vdd. I was going to try 6-8 Ohm.

Russ, do you know if Buffalo/Ivy balanced inverts phase?

Fred

[Russ White]

Originally posted by woodturner-fran
Yes, Russ, send it on.... you have my email right?

Hi Fran, sent it to the email address I had. I hope you got it.

Leo has already started testing his proto Counterpoint. He built it in record time.

Cheers!
Russ