Does anyone know of any good designs for voltage buffers? I need the gain to be at least 0.8 for the project I am doing.

 

Op-amp with negative feedback?

 

An op amp configured as a voltage follower will give you a gain of 1. What are the requirements?

 

the only requirement is that the supply voltage be 1.25 volts.

 

If the power supply is 1.25V, what is the signal amplitude?

 

the only requirement is that the supply voltage be 1.25 volts.

Surely, that is not the only requirement!

 

If the power supply is 1.25V, what is the signal amplitude?

I am expecting a ramp signal. It starts at about 1.248 volts and should decrease to about 100mV to 200mV.