A common one of these devices uses three Widlar mirrors and a Darlington transistor configuration in its class A gain stage.
The first one to be widely available was the Fairchild UA-709, though that was replaced by the much more popular 741. Putting one of these devices in parallel with a resistor to create a hysteresis loop creates a Schmidt Trigger. A common one of these devices uses three Widlar mirrors and a Darlington transistor configuration in its class A gain stage. Commonly used in simpler configurations as comparators and integrators, ideal versions of these devices have an infinite slew rate and  zero input current and infinite open-loop gain. Consisting of an inverting and non-inverting input, for 10 points, name these devices that use feedback to take a series of voltage inputs to create a higher-amplitude output voltage.
The first one to be widely available was the Fairchild UA-709, though that was replaced by the much more popular 741.
{Operational amplifier} or {Op}-{amp}