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Re: Input current on A0 higher as soon as I read A1
Posted: 18 Nov 2017 00:46
by p0lyg0n1
Sorry for the waiting. Finally I have a time for ADC. So, yes, there is a very strange behavior when I try to use multiple channels. I have to go deeper to hardware to say what is wrong. I confirm the behavior of ADC that Peter and knst08 has reported previously. I'll try to find the reason and fix it asap.
Re: Input current on A0 higher as soon as I read A1
Posted: 21 Feb 2018 22:59
by michap
Are here any news about this issue?
How much is the input current in such cases? Is there a difference between the analog inputs?
( I mean use A0 + A1 or A0 + A3 etc.)
Will it happen only when using the internal reference?
Thank you for updating!
Michael
Re: Input current on A0 higher as soon as I read A1
Posted: 08 Mar 2018 16:31
by Rob
I'm experiencing the same issue.
It seems, that as soon as I read any ADC channel except A2, all analog inputs get pulled up internally!
Can this please be fixed? I need to use more than one ADC channel.
Re: Input current on A0 higher as soon as I read A1
Posted: 25 Mar 2018 00:32
by Rob
I have worked around this issue by connecting an external multiplexer to A2.