How would I go about generating a very small analog signal ( 0.06-0.08 V)
How would I go about generating a very small analog signal

By starting with a larger one and attenuating it.  You can create such signals directly, but then you're operating closer to the noise floor and offset voltage of whatever parts you are using to create the signal.

A simple way to attenuate a analog signal is with something called a resistor divider.  Use that as a search term and you'll find plenty of information on it.