AVR-Chat

On 6/18/07, kernels_nz <kernels@slingshot.co.nz> wrote:
> This is excellent advice from Bob, using a fet to connect / disconnect
> the power supply to the voltage divider also means you can use lower
> value resistors for the divider, I have had some issues with resistors
> > 1M OHM.

This is documented, the ADC inputs are not perfect infinite impedance
inputs with no leakage current.. You're best to feed them with a real
low Z source, and disconnect when not looking.