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Fundamental Question regarding Driving a SAR ADC


I was going through the videos of driving SAR ADC driving by Anne.

Certain queries are there.

1. One assumption she made in their modelling about the switch is not having any series resistance. Suppose there is a series resistance between Filter Capacitor and Cin, then how to compute mathematically the kickback voltage.

2. In that video, two equations were derived. One to calculate no of time constant required to get Vsettle and other related to Acquition time. Both of these things need value of Cflt. without prior knowledge of this component, how to derive the equation.

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