NI 9402 - max output current per channel

[SzymonM]

Hi everyone!

I was looking for the maximum output current per channel in documentation, and couldn't find,

I need to build a separation with optocoulper, I have found in "getting started guide" that there is a possibility:

So, what is the maximum sourcing current, when pin is set as output?

Best regards,

Szymon

[santo_13]

Here you go, found this detail in the spec sheet pg.5

If the load is 2mA, the output can guarantee 2.8V when high (ideally 3.3V when no load).

[SzymonM]

Thanks, but this is not quite answer for my question, and these data I have found too.

I just wonder how many miliamps I could supply from channel and it is stay working.

[santo_13 · Accepted solution]

Electrically, it is still working at 100uA load and 2mA load as well.

Just that at 100uA load, the voltage does not sag much and is guaranteed to maintain 3V at least, with a 2mA load, it is guaranteed to maintain 2.8V at least.

If your definition of working is to source at least 3V, then it is 100uA max.

If your definition of working is to source at least 2.8V, then it is 2mA max.

Anything beyond these values can be extrapolated.