The open-loop-gain/phase plot in the op-amp data sheet applies to the primary amplifier. The secondary amplifier operates in closed-loop mode, so you have to measure its phase shift not only close to ...

Voltage-feedback op-amp datasheets specify five different gains: open-loop gain or A VOL (which may be 160 dB or higher without negative feedback), closed-loop gain, signal gain, noise gain, and ...

The output of the op amp is not usually set up to drive digital logic, so additional circuitry may be required to adapt it. The main argument for using an op amp as a comparator occurs when there is a ...

This difference shows up in the rail-to-rail op amp data sheet as two or more common-mode rejection ratio (CMRR) specifications. In Figure 5, the CMRR in dB is equal to 20*log (ΔV CM /V OS).

The humble op-amp can be configured into so many circuit building blocks that it has become an indispensable tool for designers.

Op amps. Often the first thing that many learn about when beginning the journey into analog electronics, they’re used in countless ways in an overwhelmingly large array of circuits. When we t… ...

Analog Devices has created a fast power op-amp that can handle ±55V rails and ±1A outputs, with a digital control bus for setting internal parameters.