What is the proper term for the network of inputs in a differential amplifier?

The proper term for the network of inputs in a differential amplifier is the input stage. The input stage is responsible for receiving the signal from the various inputs, specifically the inverting and noninverting inputs, and is critical in determining how these inputs interact to produce an amplified output based on the difference between them.

The noninverting input and the inverting input refer to specific terminals of the differential amplifier, but they do not encompass the entire network of inputs. The feedback loop, while essential for stability and gain control in an amplifier, denotes a distinct pathway for feedback from the output back to the inputs, rather than representing the inputs themselves. Therefore, the term input stage accurately captures the overall configuration and function of all input connections within the differential amplifier.