It is for reference only. if you need power, supply a regulator for that purpose.
On 1/29/2015 3:14 PM, Rick Mann wrote: > I'm not sure. I read somewhere that the internal reference really should not > supply current, but looking at the schematic, it looks like it's powered from > the VDD_1V8 1.8 V rail, which can supply a total of 400 mA (according to the > SRM). I don't know how much the rest of the system draws. > > I have a 5K and 10K pot on mine, seems to work, but in the next version I > will put a voltage follower on it. > >> On Jan 29, 2015, at 14:59 , Rafael Vega <[email protected]> wrote: >> >> >> Hi, I need to connect 12 potentiometers to the adc inputs in the BBB >> (through an analog multiplexer). I have found that if I use potentiometers >> with lower resistance values (2Kohm), the input is less noisy than if I use >> higher resistance pots (500KOhms). Since the pots are "powered" by VADC and >> AGND (1.8Volts), I need to know how much current I can draw from these two >> pins. >> Anyone? :) >> >> -- >> 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]. >> For more options, visit https://groups.google.com/d/optout. > -- 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]. For more options, visit https://groups.google.com/d/optout.
