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ADC Input impedance.

Question asked by Henrik Alexandersson on Dec 12, 2014
Latest reply on Dec 18, 2014 by David Diaz Marin

Hi,

 

I'm a HW designer and is about to design a HW including a KEA64 MCU were we gonna do some ADC readings.

I'm trying to find out the input impedance for the ADC but cannot find this data in the data sheets for KEA64. The only thing if find is Hi-Z state but not what Hi-Z is.

The reasing I'm asking is if were are gonna need to buffer the analog input signal or not. Since this is a cost sensetive  project we would like to skip the buffer stage.

And the resolution is not an issue for the input reading.

 

//Henrik A

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