I want to use ZedBoard's XADC for sampling an external analog signal. Only one channel (single channel) is sufficient for now. Therefore, I tried to use the dedicated inputs, namely VP/VN in bipolar mode. When I check USERGUIDE480's page 32, the following picture is given:
1) From this figure, I understand that VN port must be supplied with an external 0.5 DC voltage source. Am I correct? Can i get this 0.5V dc from the ZedBoard not using an external supply source?
2) Is it enough I only connect VP/VN pins of XADC header leaving out other pins unconnected? I mean should I connect AGND or DGND to ground?
thanks in advance,
mehmet
PS: Sorry, I posted this question to the incorrect sub-forum.
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mehmetdemirtas89
Hey,
I want to use ZedBoard's XADC for sampling an external analog signal. Only one channel (single channel) is sufficient for now. Therefore, I tried to use the dedicated inputs, namely VP/VN in bipolar mode. When I check USERGUIDE480's page 32, the following picture is given:
1) From this figure, I understand that VN port must be supplied with an external 0.5 DC voltage source. Am I correct? Can i get this 0.5V dc from the ZedBoard not using an external supply source?
2) Is it enough I only connect VP/VN pins of XADC header leaving out other pins unconnected? I mean should I connect AGND or DGND to ground?
thanks in advance,
mehmet
PS: Sorry, I posted this question to the incorrect sub-forum.
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