Maker Pro
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Sound card input impendence

A

Animesh Maurya

Jan 1, 1970
0
Hi all,

I'm using my sound card for data acquisition. It is inbuilt on my
Intel 845GL motherboard, named Avance AC97 Audio.

I need to know the input impendence(line in port) for calculating
coupling capacitor. Also interested to know max p-p voltage?

Any help in highly appreciated.

Thanks

AM
 
J

Jamie

Jan 1, 1970
0
it varies among sound cards a bit but 5k ohm on some Mic inputs
and 50K on line inputs. these are just some.
the levels for the line in are usually around .3 to .6 p-p
and mic input levels can be very sensitive and very alot among
sound cards.
if you work around .050 for the max average i think you should
be ok.
 
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