[AudioI] Input Impedance and coupling of Zero board line inputs?

[Matt]

Hi Tom,

The input line impedance varies with input gain. At 0 dB gain, the input 
impedance is listed as 30 kOhm. At 12 dB gain, the input impedance is 
listed as 15 kOhm.

The line inputs are AC coupled. If you want to make them DC coupled, 
then you can short out the two 10 uF capacitors C11 and C12.

What project are you planning on doing ?

Matt


On 22/1/21 3:53 am, Tom Garwin via People wrote:
> Sorry if this information is listed somewhere but I have two questions 
> about the stereo line inputs to the Zero board:
>
> 1) What is the input impedance?
> 2) are the inputs AC or DC coupled?  In other words is there a 
> blocking/coupling capacitor preventing DC to reaching any on-board 
> amplifier or the A to D chip itself?
>
> Thanks
>
> -- 
> Tom Garwin
>
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