LM3886 - Capacitors Between V+ V- and Gnd

samsagaz · 31st May 2009, 10:09 PM

Hi guys, i read some tiomes that an cap are used between these pins under the LM3886 IC, wich is the purpose of that?

Is better to it directly to the IC Pins? or just can be placed in the PCB?

these are the Cap described in the Datasheet as Cs, Ca?

AndriyOL · 1st June 2009, 09:41 PM

Hi,
As the datasheet of LM3886 explains - 0.1uF caps must be placed as close as possible to the IC. This is in order to minimize inductance of traces which most likely causes an oscillations.

samsagaz · 2nd June 2009, 01:33 AM

Quote:

Originally posted by AndriyOL
Hi,
As the datasheet of LM3886 explains - 0.1uF caps must be placed as close as possible to the IC. This is in order to minimize inductance of traces which most likely causes an oscillations.

Oh, thanks too much for your support i didnt found that in the datashet

So looks like place it under the chip will be the best way

31st May 2009, 10:09 PM	#1
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	LM3886 - Capacitors Between V+ V- and Gnd Hi guys, i read some tiomes that an cap are used between these pins under the LM3886 IC, wich is the purpose of that? Is better to it directly to the IC Pins? or just can be placed in the PCB? these are the Cap described in the Datasheet as Cs, Ca?

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1st June 2009, 09:41 PM	#2
AndriyOL diyAudio Member Join Date: Jul 2008 Location: Lviv	Hi, As the datasheet of LM3886 explains - 0.1uF caps must be placed as close as possible to the IC. This is in order to minimize inductance of traces which most likely causes an oscillations.

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