This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS659037: GPADC input impedance

Part Number: TPS659037

In datasheet 4.12, source input impedance is 20Kohm max. It looks the input impedance is not very high, does it mean we need an op buffer before the ADC input? If not, should I count this 20Kohm input impedance into calculation when in  a NTC resistor measurment application(calculate the NTC resisitor value parallel with 20Kohm)?