MCP342X library

I have a question about the MCP342X library found here:https://github.com/stevemarple/MCP342x/blob/master/MCP342x.cpp

It is a library to interface the Arduino with a separate ADC the MCP342X by microchip.

The library spits out a "value" which is the ADC representation of the voltage.

What I would like to know is what value this is referenced to and how to convert this value to a voltage.

I hope someone here has experience with this library and could help me out.

http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en536354

The MCP3424 is a four channel low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially.

So, there are a range of values (from 0 to 2 to the 18th) that the chip returns, that correspond to 0 to 2.048V

Thanks Paul, just wanted to confirm.

Follow up question:
The chip also has a gain amplifier. When converting my value to a voltage, do I also need to divide by the gain amount?

The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially.

it maps -2.048V … +2.048V on 0 … ±217

details see - http://ww1.microchip.com/downloads/en/DeviceDoc/22088c.pdf - >> page 15 >> table 4.2

So i do not need to account for the gain when calculating the voltage?

camdenl:
Thanks Paul, just wanted to confirm.

Follow up question:
The chip also has a gain amplifier. When converting my value to a voltage, do I also need to divide by the gain amount?

yes, you can easily verify that with a test sketch.