LTC1859: capacitors on Vdd and reference

I am thinking of using LTC1857 with Arduino Mega.
The datasheet of LTC1857 Mixed-signal and digital signal processing ICs | Analog Devices
This datasheet recommends using 10uF capacitors with the Vdd lines. Can anyone please explain what are these capacitors for? or What if I don't use them?

Those are power smoothing capacitors intended to keep the voltage steady. If you don't use them you might run the risk of some noise in your voltage supply affecting things, but I wouldn't think it would be a deal breaker. Maybe I'm wrong.

If it were me, I would use them just because I would.

Its more than that - they are decoupling caps to prevent the switching transients on the chip
itself from causing high frequency transients on the power rails, which would degrade
performance (or even cause malfunction).

All logic chips need some decoupling (0.1uF) - this chip is a very high resolution ADC so it needs
a lot of protection from even tiny voltage transients that would affect the measurements.

Listen to him ^^.

Thank you so much. I looked at some literature about decoupling capacitors. Looks like they are really important.
So I was able to find 0.1uF capacitors,16V in my lab. I was also able to find 10uF polarized, 16V capacitors. Will the polarised capacitors work or I have to get the non-polarised tantalum capacitors?

The voltage does not change polarity, so polarized is fine.