I need some technical parameters

Hello, I am using ReSpeaker 4-Mic Array for Raspberry Pi.

I need some technical parameters of the hardware.

I want to know the volume range that the microphone can capture , how many decibels?

Is the input of the AC108 voltage or current?

What is the input range and the range of the digital signal output.

How many bits of AD converter is the AC108, 8 bits, or 16 bits?

These will help me understand the data I get and I can do better data processing.

For example, if the data obtained after sampling and analog-to-digital conversion is 65535, then what physical meaning does it represent, and how many decibels is it?

Thank you very much!

I also want to know how the data of the microphone array is stored.

Thank you!