This is a fork of the MAXDAC Arduino library by Steve Jones, to include fixes for modern Arduino toolkits and Attiny parts
There are examples for both "normal" and ATtiny parts.
In order for this to work with the ATtiny you will need to use the Adafruit version of the TinyWireM library at:
https://github.com/adafruit/TinyWireM
As this has an interface consistent with the more recent Wire library.
The library provides an Arduino interface to the Maxim MAX520/MAX521 octal digital to analogue coverters.
The datasheet can be found here http://datasheets.maximintegrated.com/en/ds/MAX520-MAX521.pdf