ADC input minimum current
ADC input minimum current
To use ADC attenuation I need to buffer the pins with voltage dividers. To minimise battery power and use highest resistances what is the minimum input current for an ESP32 analog input pin?
Re: ADC input minimum current
ADC input current will be neglible. However, to get the most accurate results from a high impedance source (like a high value voltage divider) you can add a small buffer capacitor (approx 100nF) between the ADC pin and ground.
Re: ADC input minimum current
Excellent, thanks
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