Using a DAC to convert digital to analog current

That new DAC also has parallel data bus which you would need to connect to the Arduino.

Picking up on Grumpy_Mike's earlier suggestion, try searching for a DAC that uses SPI or I2C to connect to the Arduino. Since DACs with these interfaces are often used with Arduinos, it might be easier to find sample programs or libraries that work with them.

Unless your electrical requirements are very specific, you could be better off looking for Arduino code to work with a chip, rather than choosing a chip and then looking for code.

Try Googling with search terms like "arduino dac spi library" or "arduino dac i2c tutorial".

I have used the MCP4725 DAC with the Arduino, using the I2C bus and Wire library to connect to it. Maybe get hold of the datasheet for that device, see if it will do what you need. I can post the code I used.

All the best

Ray