Quoting "Van Horn, David" <david.vanhorn@backcountryaccess.com>:

>
> What would cause sharp positive going "hair" on an ADC input?
>
> The ADC is reading ground immediately before, so the sample/hold cap =20
> should be discharged, yet every time I sample I see this sharp =20
> positive spike on the ADC input pin.
> I don't believe there is anything else happening with that pin, and =20
> it's always an ADC input.


Charge injection in the sampling switch, maybe.

--sp


> --
> David VanHorn
> Lead Hardware Engineer
>
> Backcountry Access, Inc.
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> email: =20
> david.vanhorn@backcountryaccess.com<mailto:david.vanhorn@backcountryacces=
s.com>
>
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