Hi, chiming in here because I'm about to build my first circuit that uses ADCs on BBB...
> My standard advice >> > would be to run the analog voltage through a non-inverting op amp >> > configured as a gain stage. You run the op-amp (and have to pick one >> > that does rail to rail and also runs from 1.8 volts) from the 1.8 volt >> > supply. >> > >> Yes, that's what I do. There are quite a few very low power op-amps >> suitable for running from the 1.8 volt rail on the BBB. If OP is >> interested I can look up the device, it's from TI if I remember. >> > In my somewhat amateurish approach to this I was planning to use a DC-DC converter to provide 1.8 VCC for my sensors. I'm still learning about op-amps and anything more advanced than a transistor, so I wonder whether there are any advantages to using an op-amp compared to providing 1.8 V from a switching DC-DC converter? I would be very grateful if one of the electronically literate participants to this discussion would share their insight with a newbie :) -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/46bc9c1f-6931-4f89-b685-11a2df142aba%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
