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MSP430G2333 ADC Input impedance

Other Parts Discussed in Thread: MSP430G2333

What is the min, max, and  typical Input impedance on the 10 bit A/D converter input on the MSP430G2333?  The datasheet  (page 34) mentions the mux on resistance is typically 1000 ohms but does not mention the input impedance behind the mux (that I can find).  Or is the 1000 ohms the total input impedance looking in from an A/D converter input pin?

Any feedback on the A/D input pin impedance would be great!

 

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