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Topic: Analog input impedance of the Arduino DUE (Read 256 times) previous topic - next topic

chaiwon89

I need to measure the voltage value through the analog input (ADC) of the Arduino DUE, but I want to know input impedance information to make the circuit.
Can you tell me how much(Ω) input impedance is?
Or, if you have a datasheet that contains information on Arduino DUE analog input impedance, please let me know by link.

weird_dave

Are you able to drive the input from a low impedance source, such as an op-amp? I wouldn't rely on any impedance figures to form part of your circuit as it won't be accurate.

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