Simple ACTIVE I/V for TDA1543

[Pedja]

Elso, I just noticed I might make confusion. The drawing I referred to (in my posts #19 and #22) is in your post #12, not #13.

Pedja

 

[bequerel]

Those of you who have tried four parallel TDA1543 chips, have you soldered them on top of each other or kept them separate, each with their own decoupling cap?

 

[tschrama]

I've soldered 2, 3 and 4 on top of each other.. seems to work OK, but they get very... very hot.. better use 5V supply and not the 8 or 9 volt you can sometimes see in a schematic..

Goodluck,
Thijs

 

[mickeyratt]

Dear Friends

After 13 years, when the last post was happened in this topic, i hope, you are still here!
I'd like to try this simple active I/V with a Raspberry Pi I2S interface.
I'd like to ask, that is it necessary to put an output buffer stage to this I\V?
I also would like to implement some de-emphasis stage to play some cd rips, which encoded with 15/50us pre-emphasis. But i dont know the output impedance to simple attach a capacitor with a switched relay. (It would be easier with a buffer, but i would not to degrade the purity of this I\V)
I'am thinkin' to attach a PassDiy B1 buffer:
https://www.passdiy.com/project/preamplifiers/b1-buffer-preamp

What are your opinions?
Thank you in advance!