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
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.
Animesh Maurya wrote:
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