Information about current

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ferboy93
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Joined: Thu Sep 08, 2016 9:17 pm

Information about current

Post by ferboy93 » Wed Oct 12, 2016 9:26 pm

I need to know what is the maximum current that support analog input channels of red Pitaya, I read that support 3.5 volts, but have not found anything about the current. :(

Nils Roos
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Joined: Sat Jun 07, 2014 12:49 pm
Location: Königswinter

Re: Information about current

Post by Nils Roos » Thu Oct 13, 2016 7:43 pm

The RF inputs have a high impedance (1MOhm / 10pF), which means they will draw very little current from the signal source.
The slow analog inputs have an impedance of ~35kOhm, according to the published schematics. So they'll draw 100µA at full scale input.

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