In LMT85 datasheet, when driving a switched sampling input on an ADC. It may necessary to add some filtering to minimize noise coupling. And there are two methods we can see. I'm not very sure the application for the two different output connections.
When we should choose a Cload greater than 1100pF?
And why we need a resistor when the Cload greater than 1100pF? Is Rs used for limiting the current?
Thanks & best regards.