@pidd, per the RP2040 datasheet section 4.9.2. SAR ADC, it's a small capacitor that is being charged in the sample-and-hold, so we're more concerned about the RC time constant and not about parallel resistor equivalent circuits. WIth 1 pF + 100K ballpark at the sample-and-hold, getting that DC measurement is not going to be a problem.
Statistics: Posted by katak255 — Tue Jan 07, 2025 3:28 am