The operational amplifier is arguably the most useful single device in analog electronic circuitry. When you apply them in the circuits, you must know their basics and functions. As for the function ...

Some ideal operational amplifier (often op-amp or opamp) configurations assume that the feedback resistors exhibit perfect matching. In practice, resistor nonidealities can affect various circuit ...

If you’ve ever wondered why an op amp has the little plus and minus symbols on it, its because at the heart of it, the device is a differential amplifier. The problem is that — ideally, at least — it ...

In our quest to describe the instrumentation amplifier, we began by exploring electromagnetic interference (EMI) and what to do about it. We then examined the basis of instrumentation amplifiers, ...

In the last Circuit VR we looked at some basic op amp circuits in a simulator, including the non-inverting amplifier. Sometimes you want an amplifier that inverts the signal. That is a 5V input ...

Differential amplifier chips are designed to amplify the difference between two input signals. They can amplify a small difference between two signal levels and ignore any common level shared between ...

Amplifier and comparator chips are board-level components for amplifying voltage, current, or power. There are several basic types of amplifier and comparator chips. Differential amplifier chips are ...

A differential amplifier has two inputs, one inverting and one non-inverting. Modern diff amps usually sit on a single chip. Inside the microchip or pair of discrete transistors, the positive and ...

Separating signal from noise is an ever-present challenge. How can you focus on what really matters and ignore what doesn’t? We’re not gurus, so we can’t give you a universal answer. But what we can ...

Q. Why buy an expensive comparator when an op amp is just as good? A. Because it isn't. My advice to anyone tempted to use an operational amplifier (op amp) as a comparator is the same as Mr. Punch's ...