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oneoclock  
#1 Posted : Thursday, January 29, 2015 2:54:35 PM(UTC)
oneoclock

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Hello.
I Measured the output of a AVCC trident installed on a Buffalo DAC.

They have a small oscillation that I hope can be improved .

Any ideas to solve?


Trident AVCC V1.0
avr300  
#2 Posted : Thursday, January 29, 2015 7:27:59 PM(UTC)
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oneoclock  
#3 Posted : Thursday, January 29, 2015 9:23:49 PM(UTC)
oneoclock

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Thank avr300.

I had already read but the ripple was not equal in form, frequency or amplitude.
Is much smaller 0.2 mV pp. and 100 hz.
I don´t know if it is the same solution, but I try.
avr300  
#4 Posted : Saturday, January 31, 2015 3:03:02 PM(UTC)
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No, the solution suggested will not improve 100Hz.

Can you post a picture of your DAC. I'll like to see the layout. To me it sounds like EMI or ground loop.
avr300  
#5 Posted : Saturday, February 7, 2015 6:27:22 PM(UTC)
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Or could it be the measurement method (/gear) ?
Russ White  
#6 Posted : Sunday, February 8, 2015 3:02:33 PM(UTC)
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Yes that looks like a very clear ground loop. :)
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