Building on last month’s discussion of resistor noise, let’s check out some basics of amplifier noise. The non-inverting op amp configuration is most common for low noise applications so we’ll make ...

A current-mode operational amplifier (op amp) is configured quite differently from the garden variety op amps we usually use. That configuration and its algebraic circuit analysis will be covered here ...

2. In an inverting and single non-inverting input op-amp summer, R1-R3 interact to some extent (Equation 2). Equation 2 is still manageable: R1-R3 are interactive, but not terrible to deal with. 3.

An op amp with +/-15V on the rails can’t produce 50V to wrestle the input to a particular value. But for common sense applications, those assumptions will take you a long way.