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 ...

Are your jellybeans getting stale? [lcamtuf] thinks so, and his guide to choosing op-amps makes a good case for rethinking what parts you should keep in stock.. For readers of a certain vintage ...

The circuit is based upon a design from the 1990s which as far as we can see is a pretty conventional non-inverting amplifier. It has an on-board op-amp to create a virtual ground, and three ...

The sketch below shows a single op-amp configured as a variable gain differential amplifier that uses only one variable resistance as a gain adjustment and which maintains, if not a superb value, at ...

One of the first things you learn about operational amplifiers (op amps) is that the op amp's gain is very high. Now, let's connect a feedback resistor across it, from the output to the -input.

Some power op amps have internal power dissipations of up to 500 W, and can deliver up to 1,000 W of peak power in audio applications. So far, most of these devices are found in submarine sonar units.

A simple linear voltage-controlled amplifier can be constructed with one op amp and two JFETs (see the figure). The amplifier can achieve an 80-dB dynamic control range with less than ±0.2% ...

It was not just any op-amp, but the LT1490 dual, also available as the LT1491 quad. This is a pretty neat device for applications where there is a risk of electrical abuse – at least, situations that ...