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LTC1063 -> LTC1062, using filter with a single supply 5V

UPDATE:

After reading the datasheet, I have chosen to use LTC1062 instead of LTC1063, and below is the schematic that I plan on using for LTC1062.

I will be using a single 5V supply, and I have few questions about the following circuit.

1) On the following schematic, for 10hz filter, R = 29.4k, C = 1uF, fclk = 1khz.

               * Can I say that the time constant is R*C (29,4K * 1uF) =  0.029s, so it will take 0.029s to become stable on the output?

               * Fclk = 1Khz, where does the Pin 5 connect to? Does it connect to a capacitor?  

2) How important is the stability of 5V supply? I plan on using a 5V,1Amp power supply: https://www.adafruit.com/product/501

Edit Notes

Correction
[edited by: shurp at 9:45 PM (GMT -5) on 23 Jan 2022]