Source for TDA1541 double crown

Sandor · 1st October 2005, 10:15 PM

Can anyone suggest a source for a TDA1541A S2 (double crown) ?
Best regards.

Paul

X.G. · 2nd October 2005, 02:01 AM

a chinese member ever selled the TDA1541 double crown on here before.

....but basing on my experience,I think that you maybe get 3 or 4 even 5 crowns if you improve the layout of TDA1541 DAC PCB

tubee · 2nd October 2005, 05:15 PM

Quote:

improve the layout of TDA1541 DAC PCB

Yes indeed, the 1541 is very sensitive in this.

Sandor · 2nd October 2005, 08:50 PM

Thanks for your suggestions. I'll submit to your attention the pcb layout i am going to draw.
I have read that the decoupling capacitors need to be as close as possible to pins 7-13 and 18-24, and with the shortest path to the analog ground (pin 5). Placing some SMD capacitors on the bottom side of the pcb, directly soldered on the TDA1541 pins may satisfy these requirements; is this a good idea? I have some small polypropylene SMD 100nF 15V caps. Are they suitable to that job?
Best regards.

Paul

X.G. · 3rd October 2005, 04:53 AM

Quote:

Originally posted by Sandor
Thanks for your suggestions. I'll submit to your attention the pcb layout i am going to draw.
I have read that the decoupling capacitors need to be as close as possible to pins 7-13 and 18-24, and with the shortest path to the analog ground (pin 5). Placing some SMD capacitors on the bottom side of the pcb, directly soldered on the TDA1541 pins may satisfy these requirements; is this a good idea? I have some small polypropylene SMD 100nF 15V caps. Are they suitable to that job?
Best regards.

Paul

I didn't try.... maybe a very good idea.but you should pay enough attention for the loop of digital signal return current and loop of the power supply current on here.

tubee · 4th October 2005, 05:25 AM

Ground the caps at one point in the middle just underneath 1541 if possible.

Sandor · 5th October 2005, 09:45 PM

Thank you for help.
Best regards.

Paul

1st October 2005, 10:15 PM	#1
Sandor diyAudio Member Join Date: Mar 2004 Location: Milan	Source for TDA1541 double crown Can anyone suggest a source for a TDA1541A S2 (double crown) ? Best regards. Paul

4th October 2005, 05:25 AM	#6
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	Ground the caps at one point in the middle just underneath 1541 if possible. __________________ Daisy Bell

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2nd October 2005, 02:01 AM	#2
X.G. diyAudio Member Join Date: Sep 2003 Location: GuangDong China	a chinese member ever selled the TDA1541 double crown on here before. ....but basing on my experience,I think that you maybe get 3 or 4 even 5 crowns if you improve the layout of TDA1541 DAC PCB

2nd October 2005, 08:50 PM	#4
Sandor diyAudio Member Join Date: Mar 2004 Location: Milan	Thanks for your suggestions. I'll submit to your attention the pcb layout i am going to draw. I have read that the decoupling capacitors need to be as close as possible to pins 7-13 and 18-24, and with the shortest path to the analog ground (pin 5). Placing some SMD capacitors on the bottom side of the pcb, directly soldered on the TDA1541 pins may satisfy these requirements; is this a good idea? I have some small polypropylene SMD 100nF 15V caps. Are they suitable to that job? Best regards. Paul

5th October 2005, 09:45 PM	#7
Sandor diyAudio Member Join Date: Mar 2004 Location: Milan	Thank you for help. Best regards. Paul

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